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, Genre-Grandpierre, Cyrille, Ciari, Francesco, 2015 >>
Author(s): Genre-Grandpierre, Cyrille, Ciari, Francesco
Title: De nouvelles métriques pour les réseaux viaires pour une auto-organisation de la ville allant dans le sens de la durabilité. Vers la ville lente mais accessible
Abstract: En milieu urbain l'accessibilité aux aménités est essentiellement obtenue en ayant recours à la vitesse automobile générée par la structure hiérarchisée des réseaux routiers. Ce type d'accessibilité ayant comme externalité négative une forte dépendance à l'automobile, nous proposons d'introduire de nouvelles métriques pour les réseaux routiers (en baissant les vitesses, en les homogénéisant et en introduisant un nouveau type de métrique : la métrique lente) et d'en voir les effets sur l'accessibilité. Dans un premier la localisation et le type d'aménités (ici des commerces) sont considérés comme donnés, alors que dans un second temps nous modifions la distribution et la taille des commerces conjointement aux modifications de métriques. Pour chaque scénario nous évaluons l'accessibilité produite du point de vue de l'efficacité mais aussi de la durabilité. L'objectif est de voir s'il est possible d'obtenir un bon niveau d'accessibilité (ici aux commerces) en s'affranchissant de la dépendance automobile et plus globalement de voir s'il est possible de faire de la métrique des réseaux un levier d'aménagement pour enclencher une auto-organisation de la ville allant dans le sens de la durabilité.

In urban context, accessibility is essentially ensured by fast car travel through a highly hierarchical road network. This type of accessibility generates strong car dependency and several other negative externalities. In order to reduce such externalities, we propose here the introduction of a "slow metric" ob - tained reducing and homogenizing speed on the network. The work present - ed in this paper is aimed at evaluating the effect of this metric on accessibility. At first, the location of the different amenities – we looked here specifically at retail shops – is considered as given and fixed. Next, the size and the location of the shops are modified parallel to the changes in the metric. Each scenario is evaluated in terms of how effective but also how sustainable the impact on accessibility is. The ultimate goal is to understand if it is possible to obtain a good level of accessibility (the retail shops in this case study) moving away from car dependency but also, at a global scale, if it is possible to use network metrics to unleash an auto-organisation process going toward more sustain - able urban forms.2
Published in: Urbia
Issue: 17
Pages: 183 - 196
ISSN: 1661-3708
Publication date / Date received: 2015-02-01
Publication status: Lausanne
Publication status: Published
Subjects: Accessibilité, Commerce, Métriques, Réseaux routiers, Mobilité durable, Accessibility, Retail, Road network, Metric, Sustainable mobility
Language: French
Keyword: Accessibilité, Commerce, Métriques, Réseaux routiers, Mobilité durable, Accessibility, Retail, Road network, Metric, Sustainable mobility
DBID source: FORM-1446819553
Nebis system number: 005364383
, Yang, Wenchen, Zhang, Lun, Ciari, Francesco, He, Zhaocheng, 2015 >>
Author(s): Yang, Wenchen, Zhang, Lun, Ciari, Francesco, He, Zhaocheng
Title: An Adaptive Three-stage Fuzzy Controller for Signalized Intersections Using Golden Ratio based Genetic Algorithm
Subtitle: A Comprehensive Study, paper to be presented at the 94th Annual Meeting of the Transportation Research Board
Abstract: Traffic signal fuzzy control is perceived as one of the most promising solutions to the next-generation traffic signal control problems. However, most of the studies use two-stage fuzzy controllers, whereas the uncertainty of traffic flow at intersections, and functional disability of controller learning are largely unexplored. In this study, an adaptive three-stage fuzzy logic controller for traffic signals is presented. This controller is able to update phase structure, fuzzy membership functions and fuzzy rules according to real-time traffic conditions with following two critical features: (1) to quickly capture the uncertainty of traffic flows, the controller introduces overlap phases of conflict-free flows to develop the traffic signal three-stage fuzzy model; and (2) the rolling horizon based optimization framework is designed to optimize fuzzy parameters with quasi online learning. Based on the observed second-by-second traffic data, a golden ratio based genetic algorithm is employed to efficiently yield the reliable solution of fuzzy parameters. Compared with five other traffic signal control approaches, extensive Paramics simulation experiments under different traffic conditions have demonstrated the potential of the developed controllers for adaptive traffic signal control at isolated intersections.2
Published in: Arbeitsberichte Raum- und Verkehrsplanung
Volume: 1026
Publication date / Date received: 2015-01-01
Publication status: Zürich
Publication status: Published
Event name: 94th Annual Meeting of the Transportation Research Board
Event date: January 11-15, 2015
Place: Washington, DC, USA
Language: English
DBID source: FORM-1411038039
, Heyndrickx, Christophe, Rodric, F., Bösch, Patrick M., Ciari, Francesco, 2015 >>
Author(s): Heyndrickx, Christophe, Rodric, F., Bösch, Patrick M., Ciari, Francesco
Title: Benefits of informing travellers in case of extreme precipitation events: A model based case study for Zurich using MATSim
Abstract: 2
Published in: Arbeitsberichte Verkehrs- und Raumplanung
Volume: 1108
Publication date / Date received: 2015-01-01
Publication status: Zürich
Publication status: Published
Language: English
DBID source: FORM-1444489342
, Ciari, Francesco, Weis, Claude, Balac, Milos, 2015 >>
Author(s): Ciari, Francesco, Weis, Claude, Balac, Milos
Title: Evaluating the influence of carsharing stations' location on potential membership: a Swiss case study
Abstract: Carsharing as a mode, in any of its different forms, has the peculiarity of being accessible only to members. The research presented in this paper focuses on round-trip-based carsharing, where vehicles are parked at fixed locations, called in this paper stations. Round-trip-based carsharing has been the first successful form of carsharing, and is still the most diffused one in many countries. Several studies looked at the potential of such a system in various countries but the link between spatial distribution of the stations and potential membership has not been done yet. This paper looks at this question while trying to address other limitations of the existing literature on carsharing potential. The research has two parts. In the first part, a binary logistic model of round-trip based carsharing membership in Switzerland is estimated. The model is based on a large RP dataset (the Swiss national travel diaries survey) where information on carsharing membership is collected. This provides a representative and non-biased sample. The model takes into account accessibility to carsharing at local level introducing a dependency between potential membership and actual availability of the service. The model is then run on a synthetic population representing the whole Swiss population—created based on full census data—and then validated against actual membership data of the Swiss carsharing operator Mobility. It is shown that the model estimated is able to reproduce fairly well the spatial distribution of carsharing members in Switzerland. The second part is aimed at showing that the location of stations actually impacts potential membership. To this purpose an approach to solve the problem of the optimal location of carsharing stations is proposed, where the model estimated in the first part is used as objective function of an optimization algorithm. The region surrounding the city of Zurich is taken as case study for this approach. The proposed technique is suitable to find new constellations of stations so that the number of carsharing members is incremented and can also be seen as an innovative instrument which can help in the planning of carsharing station networks.2
Published in: EURO Journal on Transportation and Logistics
ISSN: 2192-4376, 2192-4384
Publication date / Date received: 2015-01-01
Publication status: Heidelberg
Publication status: Accepted
Subjects: Carsharing, Membership, Accessibility, Regression
Language: English
Keyword: Carsharing, Membership, Accessibility, Regression
DBID source: FORM-1369756016
DOI: 10.1007/s13676-015-0076-6
, Ciari, Francesco, Bösch, Patrick M., 2015 >>
Author(s): Ciari, Francesco, Bösch, Patrick M.
Title: A Multi-Modal Infrastructure Data Base for MATSim
Abstract: 2
Publication date / Date received: 2015-01-01
Publication status: Singapore
Publication status: Unpublished
Event name: International Workshop on Behavioural detail and computational demands in agent-based models
Event date: 24-26 March 2015
Place: Singapore, Singapore
Language: English
DBID source: FORM-1446835827
, Ciari, Francesco, Becker, Henrik, Axhausen, Kay W., 2015 >>
Author(s): Ciari, Francesco, Becker, Henrik, Axhausen, Kay W.
Title: Sharing is Saving: How collaborative mobility can reduce the impact of energy consumption for transportation
Abstract: 2
Publication date / Date received: 2015-01-01
Publication status: Ascona
Publication status: Unpublished
Event name: 15th Swiss Transport Research Conference (STRC 2015)
Event date: April 15-17, 2015
Place: Ascona, Switzerland
Language: English
DBID source: FORM-1432370830
, Ciari, Francesco, Balac, Milos, Balmer, Michael, 2015 >>
Author(s): Ciari, Francesco, Balac, Milos, Balmer, Michael
Title: Modelling the effect of different pricing schemes on free-floating carsharing travel demand: a test case for Zurich, Switzerland
Abstract: Fundamental changes are continuing in the carsharing industry and the rapid diffusion of free-floating carsharing is one of them. The increased size of the operators and the more frequent occurrence of direct competition among them will likely make carsharing pricing a more important issue. The problem of how carsharing demand varies with different pricing strategies is the subject of this paper. An urban-scale and activity-based state-of-the-art multi-agent modelling framework was employed to evaluate alternative pricing strategies. Based on this analysis, findings suggest that pricing strategies may induce structural changes in the spatial and journey-purpose profiles of carsharing usage, and, in addition, impact aggregate demand levels and how they are distributed diurnally. The metropolitan area of Zurich, Switzerland was used as case study.2
Published in: Transportation
Volume: 42
Issue: 3
Pages: 413 - 433
ISSN: 0049-4488, 1572-9435
Publication date / Date received: 2015-01-01
Publication status: Heidelberg
Publication status: Published
Subjects: Car-sharing, Free-floating, Pricing, Multi-agent modeling, Demand modeling
Language: English
Keyword: Car-sharing, Free-floating, Pricing, Multi-agent modeling, Demand modeling
DBID source: FORM-1395311284, WOS-000353227900002
DOI: 10.1007/s11116-015-9608-z
Nebis system number: 000056550
, Ciari, Francesco, Balac, Milos, Axhausen, Kay W., 2015 >>
Author(s): Ciari, Francesco, Balac, Milos, Axhausen, Kay W.
Title: Modeling carsharing with the agent-based simulation MATSim: state of the art, applications and future developments
Abstract: There is already a large literature on car sharing, but understanding its impact on the transportation system needs additional work. One of the main limits of the existing research is that such modes have been mostly analyzed as isolated systems. As they were niche products, it was not easy to include them in comprehensive models of transport, and in a way it even did not make sense. But their current popularity and their expected further growth, completely change the picture. Transport model systems where such mobility concepts are explicitly modeled along all other modes will be crucial in the near future to get an insight on travel behavior impacts and to assess possible future scenarios representing the impact of long term mobility decisions. This paper describes how carsharing demand is modeled within an activity-based multi agent simulation of transport called MATSim (www.matsim.org). It draws from a series of papers written between 2009 and 2015 by the authors and is part of a research effort which ultimate goal is to build a predictive and policy-sensitive model that can be used by practitioners and policy-makers in order to test any type of carsharing scenarios. This paper summarizes the work done, provides some examples of applications, addresses current limitations and shortly reports on ongoing and planned developments.2
Published in: Arbeitsberichte Verkehrs- und Raumplanung
Volume: 1090
Publication date / Date received: 2015-01-01
Publication status: Zürich
Publication status: Published
Language: English
DBID source: FORM-1438616325
, Ciari, Francesco, Axhausen, Kay W., 2015 >>
Author(s): Ciari, Francesco, Axhausen, Kay W.
Title: Insights on the Swiss way to "Peak Car"
Abstract: For decades industrialized countries experienced growing levels of car ownership and car travel. This has been widely seen as a "natural" consequence of economic development reflecting the wish of individuals to enjoy easy access to a wider palette of activity opportunities. This came, however, with several negative impacts for the society like inefficient land and energy use, air and noise pollution, and road fatalities, to name a few. The discussion on how to limit such impacts, or even how to change paradigm toward more sustainable transport systems, has also spanned the last decades and especially in recent years acquired an impressive momentum among researchers, policy makers and society at large. Several policies have been adopted over the years to reduce the externalities due to intensive car use. It is interesting to note that in the overwhelming majority of cases, it was taken as granted that the trend toward more car mobility would have not stopped any time soon. In the last few years, though, some researchers, observing travel diary and count data, came to the conclusion that car use might have "peaked" (Goodwin, 2011), meaning that in the future car could have a still important but diminished role, especially for urban dwellers. Indeed, various studies confirm that in several industrialized countries car ownership and car use are stagnating, or even regressing (Kuhnimhof et al., 2013, Le Vine and Jones, 2012). These results would suggest that today's younger adults are less attracted by car driving than their predecessors were. The discussion is nevertheless still open on how solid this trend is and what actually caused it. This paper aims to add to the discussion dealing with a country, Switzerland, which so far has been investigated only marginally in this stream of research.2
Publication date / Date received: 2015-01-01
Publication status: S.l.
Publication status: Published
Event name: 14th International Conference on Travel Behavior Research (IATBR)
Event date: July 19-23, 2015
Place: Old Windsor, United Kingdom
Language: English
DBID source: FORM-1441877256
, Ciari, Francesco, 2015 >>
Author(s): Ciari, Francesco
Title: The multi-agent transportation simulation MATSim
Abstract: 2
Publication date / Date received: 2015-01-01
Event name: Joanneum Research
Event date: March 2015
Place: Graz, Austria
Language: English
DBID source: FORM-1446836639
, Ciari, Francesco, 2015 >>
Author(s): Ciari, Francesco
Title: Simulation models in transportation
Abstract: 2
Publication date / Date received: 2015-01-01
Event name: Audi Urban Future Initiative 2015 Workshop IV "Sprache der Individuellen Mobilität in der Smart City"
Event date: July 2015
Place: Zürich
Language: English
DBID source: FORM-1446833997
, Ciari, Francesco, 2015 >>
Author(s): Ciari, Francesco
Title: Can innovative weather services mitigate extreme events impact on transport? A test case study for Zurich, Switzerland
Abstract: 2
Publication date / Date received: 2015-01-01
Publication status: Published
Event name: 2nd European Climate Change Adaptation Conference (ECCA)
Event date: May 12-14, 2015
Place: Copenhagen, Denmark
Language: English
DBID source: FORM-1446835202
, Ciari, Francesco, 2015 >>
Author(s): Ciari, Francesco
Title: A glance into the future of transport modeling
Abstract: 2
Publication date / Date received: 2015-01-01
Publication status: Graz
Publication status: Unpublished
Event name: Zukunftskonferenz 2015 - Next Generation Urban Development and Planning Tools
Event date: March 11, 2015
Place: Graz, Austria
Language: English
DBID source: FORM-1446837167
, Bösch, Patrick M., Ciari, Francesco, Axhausen, Kay W., 2015 >>
Author(s): Bösch, Patrick M., Ciari, Francesco, Axhausen, Kay W.
Title: Required autonomous vehicle fleet sizes to serve different levels of demand
Abstract: Autonomous vehicles (AV) promise many benefits for future mobility. One of them is a reduction of the required total vehicle fleet size, especially if AVs are used predominantly as shared vehicles. This paper presents an investigation of this reduction potential using a simulation approach. Fleets of shared AVs, which serve predefined demands, are simulated with the simulation framework presented in the paper. Different demand scenarios are used, which represent different shares of a spatially and temporally detailed representation of the car travel demand of the greater Zurich region, Switzerland. These demand scenarios are combined with different supply scenarios assuming different AV fleet sizes. It is found that for a given fleet performance target (here 95% of all transport requests are served within 5 minutes) the relationship between served demand and required fleet size is non-linear and the ratio decreases as the demand increases. So there is, as could be expected, a scale effect, which has the important implication that for different levels of demand the fleet is used more or less efficiently. This paper also finds that, if waiting times of up to 10 minutes are accepted, a reduction of up to 90% of the total vehicle fleet can be possible even without active fleet management like vehicle redistribution. Such effects require however, that a large enough share of the car demand can be served by AVs.2
Published in: Arbeitsberichte Verkehrs- und Raumplanung
Volume: 1089
Publication date / Date received: 2015-01-01
Publication status: Zürich
Publication status: Published
Subjects: Raumordnung, Städtebau, Landschaftsarchitektur|Spatial and Urban Planning, Landscape Architecture, Verkehr und Transport|Traffic and Transportation, Verkehrsplanung, Strassen- und Eisenbahnbau|Traffic, Highway and Railroad Engineering, Autonomous Vehicles, Fleet Size, Car Sharing, Simulation, MATSim
Language: English
Keyword: Autonomous Vehicles, Fleet Size, Car Sharing, Simulation, MATSim
DBID source: FORM-1444375150
Nebis system number: 004231702
, Bösch, Patrick M., Ciari, Francesco, 2015 >>
Author(s): Bösch, Patrick M., Ciari, Francesco
Title: Agent-based Simulation of Autonomous Cars
Abstract: More and more highly automated vehicles arrive in the consumer market and fully autonomous vehicles are predicted to become available in the next few years. Autonomous vehicles promise to fundamentally change mobility – for users as for planners. Transport models and simulations are required to prepare for these changes. This paper suggests agent-based transport models as a suited mean to model future transport scenarios including autonomous vehicles. The multi- agent transport model MATSim is presented in detail and some possible research questions on autonomous vehicles – the future car fleet size, future demand patterns, and the interaction between public transport and autonomous vehicles – are introduced. Reason is given, why agent-based models are particularly suited to investigate these questions.2
Book title: 2015 American Control Conference
Pages: 2588 - 2592
ISBN: 978-1-4799-8685-9, 978-1-4799-8684-2
Publication date / Date received: 2015-01-01
Publication status: Piscataway, NJ
Publication status: Published
Event name: American Control Conference (ACC 2015)
Event date: July 1-3, 2015
Place: Chicago, IL, USA
Language: English
DBID source: FORM-1437123659
DOI: 10.1109/ACC.2015.7171123
, Boesch, Patrick M., Ciari, Francesco, Heyndrickx, Christophe, Perrels, Adriaan, 2015 >>
Author(s): Boesch, Patrick M., Ciari, Francesco, Heyndrickx, Christophe, Perrels, Adriaan
Title: Can innovative weather services mitigate extreme events' impact on transport? A test case study for Zurich, Switzerland
Abstract: Increased weather variability and a larger number of extreme events are among the expected impacts of climate change. Switzerland has already experienced some occurrences of this trend in recent years.2
Publication date / Date received: 2015-01-01
Publication status: Published
Event name: European Climate Change Adaptation Conference (ECCA 2015)
Event date: May 12-14, 2015
Place: Copenhagen, Denmark
Language: English
DBID source: FORM-1431707259
, Boesch, Patrick M., Ciari, Francesco, 2015 >>
Author(s): Boesch, Patrick M., Ciari, Francesco
Title: A Multi-Modal Network for MATSim
Abstract: Explicitly multimodal simulation in MATSim exists since several years, but so far separate networks were usually used to simulate public and private transport. New questions and challenges in transport planning however, require the simulation of the competition for capacity between different modes. This paper presents a new software package that can create a MATSim network that enables public and private transport to share the network and therefore to compete for slots.
The software package is designed in a modular approach that allows quick and easy exchange of single functions to provide improvements, new options or abilities. The package creates the network and the schedule for Switzerland from entirely open data. The network is built from Open Street Map data and the schedule from the publicly available SBB HAFAS data. The package uses only MATSim data structures for the communication between modules, thus other data sources could be integrated easily.
The final package and the network and schedule it produces are tested and analysed to confirm proper functioning. These analysis reach from visual comparison of the network with previous standards at IVT to simulations with performance comparisons to other MATSim public transport solutions. The results of these analysis show that the package produces valid networks and schedules that can be the basis for new, fully-multimodal simulations in MATSim.2
Publication date / Date received: 2015-01-01
Publication status: Ascona
Publication status: Published
Subjects: MATSim, Multi-Modal, Network, OSM, Mapping
Event name: 15th Swiss Transport Research Conference (STRC 2015)
Event date: April 15-17, 2015
Place: Ascona, Switzerland
Language: English
Keyword: MATSim, Multi-Modal, Network, OSM, Mapping
DBID source: FORM-1431708024
, Becker, Henrik, Ciari, Francesco, Brignoni, Massimo, Axhausen, Kay W., 2015 >>
Author(s): Becker, Henrik, Ciari, Francesco, Brignoni, Massimo, Axhausen, Kay W.
Title: Impacts of a new free-floating carsharing system traced with a Smartphone App
Abstract: Ubiquitous mobile devices such as smartphones allow real-time exchange of information. This enables new forms of social interactions and supports the idea of a shared economy. One of the best-known and most widespread applications in a shared economy is carsharing of which free-floating carsharing benefits the most from the new communication technologies. Since free floating carsharing is a new service, knowledge about its impacts is still very limited. Empirical studies in the few cities with the service have identified major user groups and their motivations to use free-floating carsharing. In addition, they analysed the dominant usage patterns as well as environmental implications (e.g. Schmöller et al., 2014; Kopp et al., 2013). Yet, these facets have been treated separately leaving possibly important links undetected. Moreover, it is still unclear how a growing diffusion of free-floating carsharing services affects overall travel behaviour (Seattle Department of Transportation, 2014). In this paper, we attempt a comprehensive investigation of the usage and impacts of free-floating carsharing based on a detailed analysis on the individual users. Given the sporadic nature of carsharing use, this goal implies surveying carsharing users for several days. However, traditional survey techniques would impose a large burden on the respondents and would therefore suffer from a low response rate and also from underreporting. Collecting the required data would be too expensive for the operator or the planner, regulator. A different approach is needed. The use of smartphones as observation tool promises a more reliable and more detailed observation of travel behaviour at reasonable cost while reducing the burden for participants. First studies (e.g. Pereira et al., 2013) have produced encouraging results. In this research, a new smartphone tracking app is used to acquire rich revealed preference data on the individual participants and their trips.2
Publication date / Date received: 2015-01-01
Publication status: Published
Event name: 14th International Conference on Travel Behavior Research (IATBR 2015)
Event date: July 19-23, 2015
Place: Windsor, UK
Language: English
DBID source: FORM-1444554326
, Becker, Henrik, Ciari, Francesco, Axhausen, Kay W., 2015 >>
Author(s): Becker, Henrik, Ciari, Francesco, Axhausen, Kay W.
Title: Comparing Car-Sharing Schemes in Switzerland: User Groups and Usage Patterns
Abstract: Free-floating car-sharing schemes operate without fixed car-sharing stations, ahead reservations or return-trip requirements. Providing fast and convenient motorization, they attract both public transport users and (former) car-owners. Therefore, the environmental impact of these novel systems is hard to estimate. This research uses a difference in difference approach to estimate the impact of free-floating car-sharing on its members' travel behaviour. Data is collected using member surveys combined with a smartphone-based GPS-tracking solution. The results can be directly compared with both a station-based round-trip car-sharing service operating in the same city and a random control group. The findings suggest, that free-floating car-sharing has a similar socio-demographic customer potential as station-based round-trip car-sharing. However, free-floating car-sharing has more active members and is employed for a broader variety of uses. Moreover, the results suggest, that it reduces car-ownership on a level comparable to station-based round-trip car-sharing.2
Published in: Arbeitsberichte Verkehrs- und Raumplanung
Volume: 1092
Publication date / Date received: 2015-01-01
Publication status: Zürich
Publication status: Accepted
Language: English
DBID source: FORM-1438774202
, Becker, Henrik, Ciari, Francesco, 2015 >>
Author(s): Becker, Henrik, Ciari, Francesco
Title: Car-sharing in Switzerland - comparison of user groups
Abstract: A survey was conducted to study customer groups and usage patterns for a station-based and a free-floating car-sharing service in Basel. It was found, that the two car-sharing services serve different groups and are used in different ways. In particular, the free-floating car-sharing service attracts a broad variety of customers. Contrarily, the station-based car-sharing service is especially appealing to highly-educated and high-income people from non-car households. Also, station-based car-sharing is mainly used for purposes actually requiring a car, whereas most free-floating car-sharing rides could in principle also have been done using public transit. Therefore, station-based carsharing direcly enables and serves carless households, whilst free-floating car-sharing does so indirectly by providing efficient transportation on a trip-basis.2
Publication date / Date received: 2015-01-01
Publication status: Ascona
Publication status: Unpublished
Event name: 15th Swiss Transport Research Conference (STRC 2015)
Event date: April 15-17, 2015
Place: Ascona, Switzerland
Language: English
DBID source: FORM-1432297069
, Balac, Milos, Ciari, Francesco, Axhausen, Kay W., 2015 >>
Author(s): Balac, Milos, Ciari, Francesco, Axhausen, Kay W.
Title: Evaluating the influence of parking space on the quality of service and the demand for one-way carsharing: a Zurich area case study
Abstract: The increased flexibility of one-way station-based and freefloating carsharing over the traditional round-trip carsharing comes with at a price. These services encounter new problems, like unbalanced distribution of cars during the day, the necessity of the increased parking supply for one-way carsharing, city permissions for parking for freefloating vehicles etc.. Therefore, the importance of the tools to investigate and to deal with this kind of problems is rising. Moreover, tools which are able to represent carsharing simulations on a disaggregate level and where the relationship of the supply with the demand can be analyzed have become a neccesity. The tool that provides these features and the one used in this work is a multi-agent transport simulation framework (MATSim) where carsharing was implemented as an extension. MATSim was used here to investigate one of the important limitations of one-way carsharing - parking. We observed and analyzed the influence of different parking-supplies on the behavior of carsharing users and the quality of service in the city of Zurich. Moreover, we present a strategy which allocates parking spaces to each carsharing station in order to satisfy the demand with the minimum number of parking spaces. The results show that different parking supplies influence the behavior of users, accessibility to carsharing stations, turnover and quality of service differently. The heuristic presented is successful in allocating the parking lots to the existing stations in order to satisfy the potential demand, while keeping the level of accessibility and turnover at the desired level.2
Published in: Arbeitsberichte Verkehrs- und Raumplanung
Volume: 1091
Publication date / Date received: 2015-01-01
Publication status: Zürich
Publication status: Published
Language: English
DBID source: FORM-1438617090
, Balac, Milos, Ciari, Francesco, Axhausen, Kay W., 2015 >>
Author(s): Balac, Milos, Ciari, Francesco, Axhausen, Kay W.
Title: Carsharing demand estimation
Abstract: Worldwide carsharing has grown significantly in recent years. The traditional round-trip model is no longer the only carsharing model offered. It is now being accompanied by more flexible options such as one-way station-based, free-floating and peer-to-peer carsharing. Moreover, it has become important to have tools that can estimate both the spatial and temporal demand for carsharing services, providing operators with a good instrument for planning their services. The work presented in this paper makes use of the multiagent simulation tool (MATSIM) to investigate the effects of supply on the demand of the existing round-trip service in the Zurich area of Switzerland. Additionally, the results provide guidance for the possible optimization of the carsharing service. Also presented is an implementation of a one-way station-based model as a part of the MATSIM framework as well as an investigation of the potentials of one-way carsharing service in the study area. Results show that there is still untapped potential of round-trip carsharing, but that service might need optimization. Furthermore, because of greater convenience, one-way carsharing would generate slightly less than three times more trips compared with the round-trip option.2
Published in: Transportation Research Record
Volume: 2536
Pages: 10 - 18
ISSN: 0361-1981
Publication date / Date received: 2015-01-01
Publication status: Washington D.C.
Publication status: Published
Language: English
DBID source: FORM-1407405878
DOI: 10.3141/2536-02
Nebis system number: 000024408
, Balac, Milos, Ciari, Francesco, 2015 >>
Author(s): Balac, Milos, Ciari, Francesco
Title: Enhancement of the carsharing fleet utilization
Abstract: Worldwide expansion of the carsharing services in recent years has increased the importance of enhancing the performance of the existing carsharing systems as well as good planning of the future ones. Some of the important segments of a good carsharing service is high availability paired with high utilization of the carsharing vehicles. The work presented here makes use of the multi-agent transport simulation tool (MATSim) to investigate two approaches in enhancing the utilization of the round-trip carsharing fleet. Presented strategies increase the utilization of vehicles up to 52%, number of rentals up to 24% and increase the turnover for the operator up to 25%.2
Pages: 1 - 11
Publication date / Date received: 2015-01-01
Publication status: Ascona
Publication status: Published
Subjects: Carsharing, MATSim, Fleet utilization
Event name: 15th Swiss Transport Research Conference (STRC 2015)
Event date: 15-17 April 2015
Place: Ascona, Switzerland
Language: English
Keyword: Carsharing, MATSim, Fleet utilization
DBID source: FORM-1432316802
, Axhausen, Kay W., Boesch, Patrick M., Ciari, Francesco, Schmid, Basil, 2015 >>
Author(s): Axhausen, Kay W., Boesch, Patrick M., Ciari, Francesco, Schmid, Basil
Title: Autonomous Cars – The next revolution in mobility
Abstract: 2
Published in: SNF-Projektantrag (bewilligt)
Publication date / Date received: 2015-01-01
DBID source: FORM-1431709632
, Boesch, Patrick M., Ciari, Francesco, 2014 >>
Author(s): Boesch, Patrick M., Ciari, Francesco
Title: Climate Change Influence on Swiss Transport, Tourism and Energy
Subtitle: A Stakeholders Perspective
Abstract: The European research project ToPDAd (www.topdad.eu) investigates the expected influence of climate change on the transport, tourism and energy sectors. One of the main goals is to develop adaptation strategies that stakeholders - mainly private firms and policy makers - could implement. A specifically designed tool set will assist them adapting the strategies to their individual needs. Part of the tool set creation process were interviews with key industry representatives and experts conducted in several European countries to identify the particular needs. In selected countries, these interviews were supplemented by further surveys addressed to a wider target audience. For Switzerland, the IVT conducted six interviews covering transport and tourism, while 55 more stakeholders from all three sectors were targeted with a customized Swiss version of the online questionnaire. Additionally, 5 Swiss public transport companies were approached with a written questionnaire. This paper presents the findings of the Swiss case. The results indicate that while companies and public agencies are aware of climate change, often in everyday business it is not a topic yet. First effects of climate change are already noticeable, for example the changes in the durations of the seasons. This causes also already first reactions in tourism for example. In general however, most stakeholders follow still an "observe and await"-strategy. For the consulted stakeholders, climate change is expected to affect their business most in the form of increased weather variability and more extreme weather events, which pose a threat to infrastructure and operations. There adaptation and protection measures are needed and expected in all sectors.2
Publication date / Date received: 2014-04-01
Publication status: Ascona
Publication status: Published
Event name: 14th Swiss Transport Research Conference (STRC 2014)
Event date: May 14-16, 2014
Place: Monte Verità, Ascona, Switzerland
Language: English
DBID source: FORM-1399627812
, Balac, Milos, Ciari, Francesco, 2014 >>
Author(s): Balac, Milos, Ciari, Francesco
Title: Modelling Station-Based Carsharing in Switzerland
Abstract: Worldwide carsharing use has grown considerably in recent years. The traditional station-based operation model – where a car needs to be picked-up and returned at the same station – is no longer the only one offered. One-way carsharing, after some unsuccessful experiments in the past, is being offered again and free-floating carsharing is gaining quickly more and more users. From a modelling standpoint, the main challenge is to develop suitable models for simulating different kinds of carsharing operations. The work presented in this paper makes use of the multi-agent simulation tool (MATSim) – which was used in the previous work on carsharing, to model round-based and one-way carsharing for the metropolitan area of the city of Zurich. Main findings show the big opportunity of expanding a carsharing service in Switzerland and a complementarity of these two carsharing alternatives. Moreover, an impact on the demand, of the relocation of existing carsharing stations in order to increase the number of members, is also presented. Finally, this work presents improvements over the previously developed model for traditional carsharing MATSim implementation.2
Publication date / Date received: 2014-04-01
Publication status: Ascona
Publication status: Published
Subjects: Carsharing, Round-based, One-way, Demand modelling
Event name: 14th Swiss Transport Research Conference (STRC 2014)
Event date: May 14-16, 2014
Place: Monte Verità, Ascona, Switzerland
Language: English
Keyword: Carsharing, Round-based, One-way, Demand modelling
DBID source: FORM-1400086283
, Stahel, Alexander, Ciari, Francesco, Axhausen, Kay W., 2014 >>
Author(s): Stahel, Alexander, Ciari, Francesco, Axhausen, Kay W.
Title: Modeling impacts of weather conditions in agent-based transport microsimulations
Abstract: Despite all mitigation efforts, climate change will impact transport systems. As the exact effects are still uncertain, a range of possible climate change outcomes has to be considered. For that purpose, it is important to have an instrument modeling a transport system and its behavior in different weather conditions. This paper shows that agent-based micro-simulations represent a promising approach for comprehensively modeling the impacts on transport systems. Moreover, based on evidence from previous literature, a new comprehensive classification of the various transport system aspects affected by climate change is proposed: Transport infrastructure, safety, travel behavior and socio-economic circumstances. Existing weather-sensitive models are restricted to impacts on transport infrastructure and driving behavior or include very simplistic activity-travel behavior models. Different approaches are sketched for the simulation of regular and unexpected weather conditions within the Multi-Agent Transport Simulation (MATSim). For regular weather conditions, it is proposed to search for tipping points where the performance of the transport system starts to significantly deteriorate due to the weather condition. For certain impacts categories, in particular for activity-travel behavior, the degree of impact and sometimes direction varies within the literature, calling for further analysis. Modeling unexpected weather conditions requires the application of the within-day replanning module within MATSim. The key challenge here is the definition of the appropriate replanning strategies when an unexpected event occurs.2
Publication date / Date received: 2014-01-01
Publication status: Washington, D.C.
Publication status: Published
Event name: 93rd Annual Meeting of the Transportation Research Board
Event date: January 12-16, 2014
Place: Washington, D.C., USA
Language: English
DBID source: FORM-1376919951
, Pilli-Sihvola, Karoliina, Nurmi, Väinö, Perrels, Adriaan, Harjanne, Atte, Bösch, Patrick, Ciari, Francesco, 2014 >>
Author(s): Pilli-Sihvola, Karoliina, Nurmi, Väinö, Perrels, Adriaan, Harjanne, Atte, Bösch, Patrick, Ciari, Francesco
Title: Innovations in weather services as a crucial building block for climate change adaptation in road transport
Abstract: The road transport sector is facing rising uncertainties in planning and operations due to climate change induced changes in weather variability and extreme events. However, because of the high level of uncertainty related to the future climate, the adaptation measures should be robust so as to retain the option value of the portfolio of measures. As an example of such a measure, this paper evaluates how foreseen innovations in weather services potentially reduce weather sensitivity and, consequentially reduce the negative effects of climate change in the sector. The study is based on a theoretical framework on climate change adaptation and valuation of weather and climate services with the use of Weather Service Chain Analysis. We apply these frameworks on road transport sector with a special emphasis on drivers' decision making before and during a trip. We show that improved weather information, including more accurate weather forecasts, new applications and information dissemination channels can decrease the vulnerability of the mode to projected shifts in extreme weather patterns due to climate change.2
Published in: European Journal of Transport and Infrastructure Research
Volume: 16
Issue: 1
Pages: 150 - 173
ISSN: 1567-7133, 1567-7141
Publication date / Date received: 2014-01-01
Publication status: Delft
Publication status: Published
Subjects: Adaptation, Climate Change, Information, Innovation, Road transport, Weather Service
Language: English
Keyword: Adaptation, Climate Change, Information, Innovation, Road transport, Weather Service
DBID source: FORM-1406989248, SCOPUS-84949783165
, Heyndrickx, Christophe, Purwanto, Joko, Ciari, Francesco, Bösch, Patrick, Perrels, Adriaan, 2014 >>
Author(s): Heyndrickx, Christophe, Purwanto, Joko, Ciari, Francesco, Bösch, Patrick, Perrels, Adriaan
Title: The impact of extreme weather events on urban mobility in Switzerland
Subtitle: Combining a traffic micro-simulation with an economic macro-model
Abstract: One expected effect of climate change will be an increase in intra- and inter-seasonal weather variations, including substantially more frequent and more severe weather extremes in several parts of Europe. A substantial part of the short term total economic costs (and hence indirect costs) caused by extreme weather events occur through an impaired transport system. This paper applies an innovative model-based analysis of the short and longer term impact of climate change, taking the perspective of disruptions of the urban transport system. Three different models, suitable to capture different aspects of the problem at hand, were combined. An agent-based micro simulation model (MatSim), a system-dynamics model of the Swiss transport market (MOVEET) and a general equilibrium model of the Swiss economy (EDIP). The final goal of this approach is to estimate the costs of disruptive events for climate change, as well as to estimate the impact of weather information for travellers. This paper contains the preliminary results of a test-case of the model linkage, using extreme precipitation for Zurich and Switzerland as a case-study. The full model linkage was run, but the results are not entirely conclusive. We find that the cost of extreme precipitation is relevant and increasing in the future, but can only draw preliminary results on the total direct and indirect costs of extreme precipitation in the future. These results will become available at the completion of the ToPDad project, which is the main source of financing for this study.2
Published in: Arbeitsberichte Verkehrs- und Raumplanung
Volume: 1012
Publication date / Date received: 2014-01-01
Publication status: Published
Subjects: Climate change, Extreme precipitation, Microsimulation, General equilibrium modelling
Language: English
Keyword: Climate change, Extreme precipitation, Microsimulation, General equilibrium modelling
DBID source: FORM-1406990168
, Ciari, Francesco, Bock, Benno, Balmer, Michael, 2014 >>
Author(s): Ciari, Francesco, Bock, Benno, Balmer, Michael
Title: Modeling station-based and free-floating carsharing demand
Subtitle: Test case study for Berlin
Abstract: Carsharing, in any form, is still growing around the world. One of the effects is that the number of cities where multiple carsharing operators are competing is increasing. It is safe to assume that the carsharing industry has not ever been as competitive as it is now. This likely make the present a very good time for researchers investing their efforts on providing tools for the assessment and planning of carsharing programs. Nevertheless, efforts in this direction are still very few, in particular for some of the newest form in which carsharing has been implemented, like free-floating carsharing. This paper reports on a study which made use of MATSim – an agent-based simulation software which was already used to model station-based carsharing in the past – to evaluate different carsharing scenarios for the city of Berlin, Germany. The main findings are the existing high potential to further extend carsharing services in Berlin and the apparent complementarity of station-based and free-floating carsharing. On the methodological level the work introduces a new tool for the modeling of free-floating carsharing along with the improvement of the previously existing station-based carsharing model.2
Published in: Transportation research record : journal of the Transportation Research Board
Volume: 2416
Pages: 37 - 47
ISSN: 0361-1981
Publication date / Date received: 2014-01-01
Publication status: Washington D.C.
Publication status: Published
Subjects: Architektur, Gebaute Umwelt und Umweltgestaltung |Architecture, Built Environment and Environmental Design, Umwelt, Verkehr, Geographie|Environment, Traffic, Geography
Language: English
DBID source: FORM-1377850175
DOI: 10.3141/2416-05
Nebis system number: 000024408
, Ciari, Francesco, 2014 >>
Author(s): Ciari, Francesco
Title: Sie sind auch ein Agent!
Subtitle: Wie Agenten-basierte Verkehrssimulationen funktionieren
Published in: Treffpunk Science City - Total mobil – ständig unterwegs in Raum, Zeit und Denken
Publication date / Date received: 2014-01-01
Publication status: Zürich
Publication status: Published
Event name: Treffpunk Science City - Total mobil – ständig unterwegs in Raum, Zeit und Denken
Event date: March 16 - April 13, 2014
Place: Zürich, Switzerland
Language: German
DBID source: FORM-1395327233
, Ciari, Francesco, 2014 >>
Author(s): Ciari, Francesco
Title: MATSim Work in Zurich
Subtitle: An Overview
Publication date / Date received: 2014-01-01
Publication status: Published
Event name: MATSim PhD Students Seminar
Event date: August 2014
Place: Wiepersdorf, Germany
Language: English
DBID source: FORM-1409838051
, Ciari, Francesco, 2014 >>
Author(s): Ciari, Francesco
Title: Climate change adaptation in the railway sector
Subtitle: An International comparison
Publication date / Date received: 2014-01-01
Publication status: Unpublished
Event name: 3rd Nordic International Conference on Climate Change Adaptation
Event date: August 25-27, 2014
Place: Copenhagen, Denmark
Language: English
DBID source: FORM-1409838192
, Ciari, Francesco, 2014 >>
Author(s): Ciari, Francesco
Title: Carsharing
Subtitle: Why to model carsharing demand and how
Publication date / Date received: 2014-01-01
Publication status: Published
Event name: Verkehrsingenieurtag 2014
Event date: March 6, 2014
Place: Zurich, Switzerland
Language: English
DBID source: FORM-1395327032
, Boesch, Patrick M., Ciari, Francesco, Perrels, Adriaan, 2014 >>
Author(s): Boesch, Patrick M., Ciari, Francesco, Perrels, Adriaan
Title: ToPDAd Deliverable 2.3 - Overview of system responsiveness to climate change impacts in energy, transport and tourist sectors
Abstract: ToPDAd aims to provide a set of best-practice climate-change-strategies for regional stakeholders and decision makers in the sectors Energy, Tourism and Transport. These strategies are developed and supported by a state-of-the-art toolset of methodologies and models. To acquire a database on which these methodologies can be applied and from which strategic conclusions can be derived, different sector-specific as well as cross-sectorial case themes are studied in WP2. In Deliverable 2.3 these case themes are defined, including the specification of each case theme scenario. For each case the stepwise (modelling) approach is outlined, the planned output is described, and the system responsiveness is discussed. Furthermore, the baseline scenario combinations defined in Deliverable 2.1 are summarized and individual, case specific assumptions and scenario extensions are formulated. A general alignment for the baseline scenarios as well as a stepwise approach of the cases building on these baselines is proposed, so as to facilitate both comparability of case-theme results and use of the case-theme simulation results in subsequent steps (macro-economic models; and toolbox) in ToPDAd. The common baseline scenarios consist of three different combinations of representative concentration pathways (RCP) and shared socio-economic pathways (SSP). The first baseline scenario represents a sustainability oriented, open and co-operative world with low adaptation needs, the second scenario a divided world with moderate adaptation needs where Europe remains relatively wealthy and contributes to climate change mitigation and the third a growth oriented world with low regulation and high adaptation needs. These scenarios are explained in more detail in Deliverable 2.1. Each case theme implements some or all of these baseline scenarios. The different case themes cover different geographical areas and different weather situations (e.g. droughts vs. heavy rainfalls). Accordingly, they have very specific needs for weather and climate data. UAE is the only institution providing weather data in the project which ensures consistency across all case themes. The specific case themes are selected, defined and refined based on stakeholders' feedbacks acquired in the recent months as part of WP6 of ToPDAd. This direct consultancy and involvement of the project's target group guarantees relevancy and quality of the case themes. The case themes are sector-specific or cross-sectorial depending on which sectors are relevantly affected by the studied phenomena. The selected case themes are: Case-Theme 1 – Decreasing Snow Reliability (Sector: Tourism, Lead Beneficiary: JR): Decreasing reliability of winter snow cover in Alpine and Nordic ski tourist areas – common and different effects. Case-Theme 2 – Rise of Average Summer Temperatures (Tourism, JR): Rise of average summer temperatures and long term implications for summertime tourism – spatial and seasonal redistributions. Case-Theme 3 – Impact of Arctic Ice Melting (Transport, TML): Retreat of Arctic sea ice cover – implications for international logistics in Europe and beyond. Case-Theme 4 – Weather Extremes and Traffic (Transport, TML): Larger intra- & inter-seasonal variations in weather, incl. extremes – higher frequencies of unfavourable conditions (e.g. heavy rain). Case-Theme 5 – Variations in Energy Production (Energy, VTT): Larger intra- & inter-seasonal variability in power generation based on runoff, solar insolation and winds - implications for hydro, solar and wind power generation as well as the second order impacts in the rest of the power system. Case-Theme 6 – Effects of Flooding on Energy, Transport and Tourism (Cross-sectorial, 4CMR): Extreme weather events leading to flooding cause damage to a wide variety of infrastructure and production capacity in cities. Such damage can result in significant direct and indirect economic effects, which in turn can be reduced through allocation of resources to adaptation. Case-Theme 7 – Effects of protracted Drought and Heatwave on Energy, Transport and Tourism (Cross-sectorial, 4CMR): Protracted drought has lowered water levels and raised temperatures in rivers France, Germany and Benelux thereby seriously limiting cooling water availability. Despite maximum use of inter-regional transmission capacity it curtails electricity supply in various regions, while demand has risen due to a heat wave. Longer term changes in precipitation and temperature affect biomass production in Austria, curtailing availability of biomass for energy.
Publication date / Date received: 2014-01-01
Publication status: S.l.
Publication status: Published
Language: English
DBID source: FORM-1399628853
, Balac, Milos, Ciari, Francesco, Genre-Grandpierre, Cyrille, Voituret, Felix, Gueye, Serigne, Michelon, Phillipe, 2014 >>
Author(s): Balac, Milos, Ciari, Francesco, Genre-Grandpierre, Cyrille, Voituret, Felix, Gueye, Serigne, Michelon, Phillipe
Title: Decoupling accessibility and automobile mobility in urban areas
Abstract: The aim of this article is to see to what extent it is possible to tend to cities where accessibility will be decoupled from the speed of car travel. In this context, as a first step, we simulate different policies of speed regulation and investigate their effects on modal split, distances travelled, and people satisfaction using a multi-agent simulation tool and taking Zurich (Switzerland) as a test case. As it appears that the effects of regulation of speed alone is insufficient to reach both a more sustainable mobility and to preserve individual satisfaction, we couple it, in a second step, with an optimal relocation of urban amenities using a specifically developed methodology. The results show that this double action (on speed and amenities location) may be able to provide a slower but accessible town which will, in addition, preserve the individual satisfaction: the sustainable mobility city.
Book title: Proceedings of the 5th Transport Research Arena 2014 (TRA2014)
Publication date / Date received: 2014-01-01
Publication status: Accepted
Event name: 5th Transport Research Arena TRA2014
Event date: April 14-17, 2014
Place: Paris
Language: English
DBID source: FORM-1382177660
, Balac, Milos, Ciari, Francesco, 2014 >>
Author(s): Balac, Milos, Ciari, Francesco
Title: Retailers location choice based on shopping and land prices
Abstract: For the success of a retailer, stores location is considered as one of the most important factors. In the evaluation of a location, contextual to the opening or the relocation of a shop, different aspects should be considered like accessibility, land price, applicable prices in the area, competition, etc. The work reported in this paper extends a previous effort which integrated an agent-based module of retailers' location decision into the multi-agent transport simulation (MATSim). The module tries to find a constellation of stores which increases the number of customers and turnover for the retailer, based on the different shopping and land prices in the simulated area. The functionality of the module has been demonstrated on the "Greater-Zurich" scenario, where real grocery retail stores of the area are modeled. The results obtained show a significant increase in both number of customers and turnover. Finally, possible limitations and necessary improvements of the developed module are presented.2
Publication date / Date received: 2014-01-01
Publication status: Bucharest, Romania
Publication status: Published
Event name: 21st International Conference on Recent Advances in Retailing and Services Science
Event date: July 7-10, 2014
Place: Bucharest, Romania
Language: English
DBID source: FORM-1395320885
, Ciari, Francesco, Stahel, Alexander, 2013 >>
Author(s): Ciari, Francesco, Stahel, Alexander
Title: Mobilitätsverhalten in der Schweiz
Published in: Internationales Verkehrswesen
Volume: 65
Issue: 4
Pages: 60 - 63
ISSN: 0020-9511
Publication date / Date received: 2013-01-01
Publication status: Hamburg
Publication status: Published
Subjects: Verkehr und Transport|Traffic and Transportation
Language: German
DBID source: FORM-1395320317
Nebis system number: 000023346
, Ciari, Francesco, Marmolejo, Alejandro, Stahel, Alexander, Axhausen, Kay W., 2013 >>
Author(s): Ciari, Francesco, Marmolejo, Alejandro, Stahel, Alexander, Axhausen, Kay W.
Title: Mobility patterns in Switzerland
Subtitle: Past, present and future
Abstract: This paper reports on an ongoing project which main goal is the setup of a scenario for the microsimulation model MATSim for the year 2030. Running the model on such scenario is expected to deliver a plausible prediction of transportation demand in Switzerland in that year. The work involves various challenges and can be broadly divided in two tasks. The first is the generation of a suitable synthetic population mimicking the real Swiss population in 2030. The second, which is the part described in this paper, is evaluating past mobility patterns, find out how they evolved until the present and figure out how they are expected to further evolve in the future. This has been done looking at Swiss travel diaries surveys from 1994 to 2010. The main finding of the research is that travel behavior did not change substantially in Switzerland in that span of time. In particular the number of out-of-home activities and home-to-home journeys for the same age groups across cohorts is fairly stable, although the time spent at activities is slightly decreasing. Some change has been observed also in license ownership and car ownership. Future mobility patterns have been delineated projecting the actual trend toward 2030. Additionally, two aspects which are supposed to play a major role in future mobility patterns – teleworking and teleshopping – were investigated.
Publication date / Date received: 2013-01-01
Publication status: Published
Event name: 13th Swiss Transport Research Conference (STRC 2013)
Event date: April 24-26, 2013
Place: Ascona, Switzerland
Language: English
DBID source: FORM-1367317078
, Ciari, Francesco, Axhausen, Kay W., 2013 >>
Author(s): Ciari, Francesco, Axhausen, Kay W.
Title: Large-Scale Travel Data Sets and Route Choice Modeling
Subtitle: European Experience
Publication date / Date received: 2013-01-01
Publication status: Published
Event name: 92nd Annual Meeting of the Transportation Research Board. Workshop 189 "Route choice modeling and availability of data sets"
Event date: January 13-17, 2013
Place: Washington, DC, USA
Language: English
DBID source: FORM-1369754845
, Ciari, Francesco, Axhausen, Kay W., 2013 >>
Author(s): Ciari, Francesco, Axhausen, Kay W.
Title: Carsharing Stated Preference (SP)
Abstract: A recent study aimed to estimate the potential of carpooling in Switzerland. Part of this study was a survey in which the attitude of the public towards this transport option was investigated using both multi-response questions and stated preference (SP) experiments. In order to gain an insight on how innovative modes are perceived in general, the SP part was composed of two different experiments, one of them including carsharing as alternative. In the first experiment respondents were choosing among car, public transport, carpooling as driver and carpooling as passenger. In the second experiment respondents were choosing among car, public transport and carsharing. This paper reports on the multinomial logit choice models, which were estimated based on participants' responses. Both SP experiments were based on a trip reported by participants during a phone interview. For each experiment two specifications, a linear and a nonlinear one were estimated. The nonlinear specification allows investigating the impact of selected socio-demographic variables, in this case income and travel time, on the parameters of the models and on willingness to pay indicators. Such indicators permit to complement the qualitative discussion of the results with quantitative analyses and provide a useful background for policy evaluation and planning. Experiment 2: Carsharing In the second SP experiment the alternatives considered were car, public transport and carsharing. In this case all respondents received the same set of alternatives while the number of situations was limited to six. An issue which had to be tackled was the cost of carsharing travel. The norm in SP experiments with car and public transport as available modal options is to take into account the cost of the ticket for public transport travel and the cost of the gasoline for car travel. It is commonly accepted that gasoline cost is what car users perceive as the cost of a trip with that mode. The parking cost can be eventually added. In the case of carpooling this was appropriate, since carpooling implies the use of a private car. In the case of carsharing the usage fee covers other costs which are not usually taken into account in such experiments, nor generally by the driver a of a private car as cost of a particular trip; car insurance and amortization costs are the most important. For that reason, in the second SP experiment total kilometer costs were used. The kilometer cost was calculated using appropriate tables available on the web page of a Swiss automobile club (14). In order to have personalized costs, twelve different categories were considered according to the type of car (using price as proxy, with four levels) and to the yearly mileage (with three levels). Consumption, as in the previous exercise, was the one declared by the respondent. The cost for carsharing usage was calculated using the current prices of the Swiss operator Mobility (15). The carsharing car was, as far as possible, of the same or similar category as the respondent's own car. Mobility's fleet includes most, but not all car types. Another issue is how to take into account the duration related part of the carsharing fee. Carsharing users, in general, pay a fee, which is the sum of a distance dependent fee and a duration dependent fee. The latter depends on the rental time, which broadly corresponds to the duration of the round-trip tour; at least in the case of carsharing systems like Mobility which do not allow one-way rentals. Ideally, one would compare tours and not trips; however, since it was not possible to have the precise information needed for the whole tour, the experiment is based on a choice at the trip level. The ranges for the second experiment are reported in Table 2. They were chosen with the same criteria as for the first experiment.
Published in: Travel Survey Metadata Series
Volume: 47
Publication date / Date received: 2013-01-01
Publication status: Zürich
Publication status: Published
Subjects: CarSharing
Language: English
Keyword: CarSharing
DBID source: FORM-1372529492
, Ciari, Francesco, Axhausen, Kay W., 2013 >>
Author(s): Ciari, Francesco, Axhausen, Kay W.
Title: Carpooling in Switzerland
Subtitle: Public attitudes and growth strategies
Abstract: A recent study estimated the potential of carpooling in Switzerland. Part of this study was a survey in which the attitudes of the public towards this mode were investigated using both multi-response questions and a stated preference (SP) experiment. This paper reports on the results of the questionnaire. The first contribution of this paper is to give an insight on the reasons that motivate travellers to consider car-pooling as a possible alternative to driving alone with their own private car. Additionally, the questionnaire was the basis for factor and cluster analyses. Four different clusters of attitudes towards car pooling were identified among the population. This analysis is valuable to identify possible strategies to introduce carpooling at a larger scale in Switzerland. The results show that some parts of the population would be ready to embrace this mode of transport, in some cases even enthusiastically. This is true in particular for well educated, relatively affluent people. However, the responses suggest also that in order to exploit this potential, a system is necessary to address some of the typical issues related to carpooling. Safety is important but not the most important issue for potential participants. Practical aspects, like the guarantee of being able to go back home as a passenger if pools are arranged on a one-way basis, are those which worry respondents the most and, therefore, the most critical for carpooling success.
Book title: TRB 92nd Annual Meeting Compendium of Papers
Published in: Transportation Research Board Annual Meeting 2013 Paper
Issue: 13-2780
Publication date / Date received: 2013-01-01
Publication status: Washington, D.C.
Publication status: Published
Event name: 92nd Annual Meeting of the Transportation Research Board
Event date: January 13-17, 2013
Place: Washington, D.C.
Language: English
DBID source: FORM-1345712433
, Ciari, Francesco, Axhausen, Kay W., 2013 >>
Author(s): Ciari, Francesco, Axhausen, Kay W.
Title: Carpooling Stated Preference (SP)
Abstract: A recent study aimed to estimate the potential of carpooling in Switzerland. Part of this study was a survey in which the attitude of the public towards this transport option was investigated using both multi-response questions and stated preference (SP) experiments. In order to gain an insight on how innovative modes are perceived in general, the SP part was composed of two different experiments, one of them including carsharing as alternative. In the first experiment respondents were choosing among car, public transport, carpooling as driver and carpooling as passenger. In the second experiment respondents were choosing among car, public transport and carsharing. This paper reports on the multinomial logit choice models, which were estimated based on participants' responses. Both SP experiments were based on a trip reported by participants during a phone interview. For each experiment two specifications, a linear and a nonlinear one were estimated. The nonlinear specification allows investigating the impact of selected socio-demographic variables, in this case income and travel time, on the parameters of the models and on willingness to pay indicators. Such indicators permit to complement the qualitative discussion of the results with quantitative analyses and provide a useful background for policy evaluation and planning. Experiment 1: Carpooling In the first SP experiment four alternatives were considered: car, public transport, carpooling as driver and carpooling as passenger. Each respondent received eight situations and was invited to choose the preferred alternative. The respondent's burden of having to choose among four alternatives in each situation was a concern. For this reason respondents were randomly assigned to one of three groups, each of them corresponding to a combination of three of the four modes listed above. By limiting the burden on the respondents, this strategy keeps the response rate high. The large sample was supposed to guarantee the statistical significance of the results despite each alternative mode being evaluated in a smaller number of cases. The three combinations proposed were: - Car – Public Transport – Carpooling as driver - Car – Public Transport – Carpooling as passenger - Car – Carpooling as driver – Carpooling as passenger For carpooling it was assumed that gasoline cost would be simply split between driver and passenger (50% each). Travel distance was considered the same as for the mode car (and consequently the cost for gasoline) while travel time was increased by five minutes to take into account waiting times at the meeting point. Parking for the driver was as for the mode car. It was also considered that a few times per year driver and passenger would miss each other and thus need to reorganize the trip. The ranges of attributes for this experiment are shown in Table 1. Those ranges were chosen with the aim to be large enough in order to induce change in the behavior of respondents but still be realistic. No particular assumptions on future developments of prices or travel times were made.
Published in: Travel Survey Metadata Series
Volume: 46
Publication date / Date received: 2013-01-01
Publication status: Zürich
Publication status: Published
Language: English
DBID source: FORM-1372529297
, Ciari, Francesco, 2013 >>
Author(s): Ciari, Francesco
Title: Sharing as a key to rethink urban mobility
Publication date / Date received: 2013-01-01
Publication status: Published
Event name: Urbane Ressourcen intelligenter nutzen mit Apps
Event date: April 4, 2013
Place: Zurich, Switzerland
Language: English
DBID source: FORM-1366455850
, Ciari, Francesco, 2013 >>
Author(s): Ciari, Francesco
Title: Frequency distribution of daily travel distances
Subtitle: A study based on Swiss and Germany Data
Abstract: 2
Published in: Arbeitsberichte Verkehrs- und Raumplanung
Volume: 854
Publication date / Date received: 2013-01-01
Publication status: Zürich
Publication status: Published
Language: English
DBID source: FORM-1361792355
Nebis system number: 004231702
, Ciari, Francesco, 2013 >>
Author(s): Ciari, Francesco
Title: Carpooling potential in Switzerland
Abstract: This presentation reports on a project that aimed at finding out the potential of carpoo-ling in Switzerland. The project was financed by the Swiss Federal Roads Authority (AST-RA) and conducted together with the firms PTV Swiss and Rundum Mobil. The project was composed of two main work packages. On the one hand an extensive survey on mo-bility behavior and the attitude toward carpooling was conducted. On the other hand a simulation tool was used to estimate how many pools it would be possible to create un-der the given boundaries. Thanks to this it has been possible to consider both objective and subjective aspects of carpooling. The survey was composed of multi-response quali-tative questions and stated preference exercises. The results of the latter were used to generate a behavioral model that was embedded in the simulation. The presentation reports on both parts of the survey.
Publication date / Date received: 2013-01-01
Publication status: Published
Event name: 1st World Collaborative Mobility Congress (Wocomoco 2013)
Event date: May 22-23, 2013
Place: Luzern, Switzerland
Language: English
DBID source: FORM-1369754705
, Ciari, Francesco, 2013 >>
Author(s): Ciari, Francesco
Title: Agent-based modeling of retailers and their reactions to road pricing
Abstract: Microscopic models of travel and land use tend to have rich descriptions of the travellers, but the other actors in the urban system are normally abstracted into market clearing mechanisms. This project aims to make a central actor, the different retailers, explicit by developing an agent, which can address the locations choice problem of a retail chain, well knowing that this is only one, if important, choice of a retailing firm. The motivation of this choice is that the evaluation of road pricing as a policy tool hinges to a substantial extent on an assessment how the local retailers will respond to such charging. The new agent type will be integrated into the existing, IVT developed, agent-based simulation MATSim and the land use model framework UrbanSim/OPUS, which is currently adapted to Switzerland in a joint IVT/IRL effort. The traveller agents of MATSim will be extended, so that they can respond to road pricing in the scheduling choices. The resulting modelling system will be an important first step to a much richer description of the urban system in land use transport models, while contributing to the current Swiss policy debate about road pricing. It will be also the first to integrate the supply side choices, here for retailing, into such a system. There are three main goals for the proposed project. (I) To introduce retailers in the agent-based modelling framework MATSim, (II) to introduce road pricing to the transport micro-simulation part based on general cost functions and (III) to expand MATSim modelling capabilities by coupling it with elements of the land use model OPUS. The latter goal allows analysing both short-term transport activity and long-term land use effects. This includes shifts in both retail destination and residential location choice due to road pricing as well as shifts in the transport mode choice. Those results can feed back to the agent-based model of retailers in order to simulate their reactions to the road pricing measure.
Publication date / Date received: 2013-01-01
Publication status: Published
Language: English
DBID source: FORM-1359113748
, Horni, Andreas, Ciari, Francesco, Axhausen, Kay W., 2012 >>
Author(s): Horni, Andreas, Ciari, Francesco, Axhausen, Kay W.
Title: Coupling Customers' Destination Choice and Retailers' Location Choice in MATSim
Abstract: The multi-agent transport simulation MATSim (MATSim, 2012) contains modules for cus- tomers' destination choice (Horni et al., 2012) and retailers' location choice (Ciari and Axhausen, 2011; Horni and Ciari, 2009, 2011). This paper's goal is combining these two models into a dynamic and micro-simulated demand-supply model for shopping activities. Both models are methodologically improved by analyzing retailer clustering and its effects on customer destination choices and by discussing extension of the normative retailer location choice model toward a behavioral model.
Published in: Arbeitsberichte Verkehrs- und Raumplanung
Volume: 808
Publication date / Date received: 2012-01-01
Publication status: Zürich
Publication status: Published
Language: English
DBID source: FORM-1346690128
, Genre-Grandpierre, C., Ciari, Francesco, 2012 >>
Author(s): Genre-Grandpierre, C., Ciari, Francesco
Title: De Nouvelles Métriques pour les Réseaux Viaires pour une Auto-Organisation de la Ville allant dans le sens de la Durabilité
Subtitle: Vers la ville lente mais accessible
Abstract: En milieu urbain l'accessibilité aux aménités est essentiellement obtenue en ayant recours à la vitesse automobile générée par la structure hiérarchisée des réseaux routiers. Ce type d'accessibilité ayant comme externalités négative une forte dépendance à l'automobile, nous proposons d'introduire de nouvelles métriques pour les réseaux routiers (en baissant les vitesses, en les homogénéisant et en introduisant un nouveau type de métrique : la métrique lente) et d'en voir les ef- fets sur l'accessibilité. Dans un premier la localisation et le type d'aménités (ici des commerces) sont considérés comme donnés, alors que dans un second temps nous modifions la distribution et la taille des commerces conjointement aux modifi- cations de métriques. Pour chaque scenarii nous évaluons l'accessibilité produite du point de vue de l'efficacité mais aussi de la durabilité. L'objectif est de voir si il est possible d'obtenir un bon niveau d'accessibilité (ici aux commerces) en s'affranchissant de la dépendance automobile et plus globalement de voir si il est possible de faire de la métrique des réseaux un levier d'aménagement pour enclen- cher une auto-organisation de la ville allant dans le sens de la durabilité.
Publication date / Date received: 2012-01-01
Publication status: Published
Event name: Penser et produire la ville au XXIe siècle : modernisation écologique, qualité urbaine et justice spatiale : Journées APERAU
Event date: June 6, 2012
Place: Lausanne, Switzerland
Language: French
Review status: Unknown
DBID source: FORM-1346688856
, Ciari, Francesco, Schüssler, Nadine, Axhausen, Kay W., 2012 >>
Author(s): Ciari, Francesco, Schüssler, Nadine, Axhausen, Kay W.
Title: Estimation of Car-Sharing Demand Using an Activity-Based Microsimulation Approach
Subtitle: Model Discussion and some Results
Abstract: Carsharing is a system that allows individuals to use a car from a fleet on an hourly basis. The growing popularity of carsharing is reflected by a continuous increase in the number of users worldwide. However, the estimation of travel demand for this mode has only sporadically been addressed by researchers and not in a completely satisfactory way. The work reported in this paper introduces a new methodology to estimate travel demand for carsharing: activity-based microsimulation. An existing open source software, MATSim, has been enhanced to allow modeling carsharing. This paper reports the modeling approach and describes the implementation of the carsharing mode in the system. Some results, based on a simulation scenario with about 160'000 agents representing the urban area of Zurich, Switzerland, are presented and validated against customer data of Mobility Switzerland, the dominant carsharing operator active in the study area.
Published in: International Journal of Sustainable Transportation
Volume: 7
Issue: 1
Pages: 70 - 84
ISSN: 1556-8318, 1556-8334
Publication date / Date received: 2012-01-01
Publication status: London
Publication status: Published
Subjects: Umweltproblematik allgemein|Environmental Problems, General
Language: English
Review status: Peer reviewed
DBID source: FORM-1324659932, WOS-000305761000005
DOI: 10.1080/15568318.2012.660113
, Ciari, Francesco, Dobler, Christoph, Axhausen, Kay W., 2012 >>
Author(s): Ciari, Francesco, Dobler, Christoph, Axhausen, Kay W.
Title: Modelling one-way shared vehicle systems
Subtitle: An agent-based approach
Published in: Working paper / Transport and Spatial Planning
Volume: 785
Publication date / Date received: 2012-01-01
Publication status: Zürich
Publication status: Published
Subjects: Verkehr und Transport|Traffic and Transportation
Event name: 13th International Conference on Travel Behaviour Research
Event date: July 15-20, 2012
Place: Toronto, Ontario, Canada
Language: English
Review status: Unknown
DBID source: FORM-1342017675
DOI: 10.3929/ethz-a-007328836
Nebis system number: 007328836
, Ciari, Francesco, Axhausen, Kay W., 2012 >>
Author(s): Ciari, Francesco, Axhausen, Kay W.
Title: Modeling Location Decisions of Retailers with an Agent-Based Approach
Abstract: The paper reports about a project, where an agent-based module of location decisions of retailers has been implemented into the agent-based traffic simulator MATSim-T. The retailer module focuses on the retailers' location choice. Retailers are modeled as agents in the simulation and are allowed to relocate their stores, according to a given strategy, in order to maximize the number of their customers. The paper discusses first the conceptual background of the model and then the actual implementation. A test case, a large scale scenario representing the urban agglomeration of Zurich, Switzerland, is presented. The discussion of the results focuses on possible practical applications of the tool and on further developments.
Publication date / Date received: 2012-01-01
Publication status: Published
Event name: 91st Annual Meeting of the Transportation Research Board
Event date: January 22-26, 2012
Place: Washington, DC, USA
Language: English
Review status: Peer reviewed
DBID source: FORM-1328023731
, Ciari, Francesco, Axhausen, Kay W., 2012 >>
Author(s): Ciari, Francesco, Axhausen, Kay W.
Title: Choosing carpooling or carsharing as a mode
Abstract: A recent study aimed to estimate the potential of carpooling in Switzerland. Part of this study was a survey in which the attitude of the public towards this transport option was investigated using both multi-response questions and stated preference (SP) experiments. In order to gain an insight on how innovative modes are perceived in general, the SP part was composed of two different experiments, one of them including carsharing as alternative. In the first experiment respondents were choosing among car, public transport, carpooling as driver and carpooling as passenger. In the second experiment respondents were choosing among car, public transport and carsharing. This paper reports on the multinomial logit choice models, which were estimated based on participants responses. Both SP experiments were based on a trip reported by participants during a phone interview. For each experiment two specifications, a linear and a nonlinear one were estimated. The nonlinear specification allows investigating the impact of selected socio-demographic variables, in this case income and travel time, on the parameters of the models and on willingness to pay indicators. Such indicators permit to complement the qualitative discussion of the results with quantitative analyses and provide a useful background for policy evaluation and planning.
Published in: Arbeitsberichte Verkehrs- und Raumplanung
Volume: 694
Publication date / Date received: 2012-01-01
Publication status: Zürich
Publication status: Published
Event name: 91th Annual Meeting of the Transportation Research Board
Event date: January 22-26, 2012
Place: Washington, D.C., USA
Language: English
DBID source: FORM-1395924688, FORM-1352105178, FORM-1312198128
Nebis system number: 004231702
, Ciari, Francesco, Axhausen, Kay W., 2012 >>
Author(s): Ciari, Francesco, Axhausen, Kay W.
Title: Choosing carpooling or carsharing as a mode
Subtitle: Swiss stated choice experiments
Abstract: A recent study aimed to estimate the potential of carpooling in Switzerland. Part of this study was a survey in which the attitude of the public towards this transport option was investigated using both multi-response questions and stated preference (SP) experiments. In order to gain an insight on how innovative modes are perceived in general, the SP part was composed of two different experiments, one of them including carsharing as alternative. In the first experiment respondents were choosing among car, public transport, carpooling as driver and carpooling as passenger. In the second experiment respondents were choosing among car, public transport and carsharing. This paper reports on the multinomial logit choice models, which were estimated based on participants' responses. Both SP experiments were based on a trip reported by participants during a phone interview. For each experiment two specifications, a linear and a nonlinear one were estimated. The nonlinear specification allows investigating the impact of selected socio-demographic variables, in this case income and travel time, on the parameters of the models and on willingness to pay indicators. Such indicators permit to complement the qualitative discussion of the results with quantitative analyses and provide a useful background for policy evaluation and planning.
Published in: Arbeitsberichte Verkehrs- und Raumplanung
Volume: 694
Publication date / Date received: 2012-01-01
Publication status: Zürich
Publication status: Published
Subjects: Raumordnung, Städtebau, Landschaftsarchitektur|Spatial and Urban Planning, Landscape Architecture, Verkehr und Transport|Traffic and Transportation, Verkehrsplanung, Strassen- und Eisenbahnbau|Traffic, Highway and Railroad Engineering
Event name: 91th Annual Meeting of the Transportation Research Board
Event date: January 22-26, 2012
Place: Washington, D.C., USA
Language: English
Review status: Peer reviewed
DBID source: FORM-1352105178, FORM-1312198128
Nebis system number: 004231702
, Ciari, Francesco, Axhausen, Kay W., 2012 >>
Author(s): Ciari, Francesco, Axhausen, Kay W.
Title: Choosing carpooling or car sharing as a mode: Swiss stated choice experiments
Abstract: A recent study aimed to estimate the potential of carpooling in Switzerland. Part of this study was a survey in which the attitude of the public towards this transport option was investigated using both multi-response questions and stated preference (SP) experiments. In order to gain an insight on how innovative modes are perceived in general, the SP part was composed of two different experiments, one of them including carsharing as an alternative. In the first experiment respondents were choosing among car, public transport, carpooling as driver and carpooling as passenger. In the second experiment respondents were choosing among car, public transport and carsharing. This paper reports on the multinomial logit choice models, which were estimated based on participants' responses. Both SP experiments were based on a trip reported by participants during a phone interview. For each experiment two specifications, a linear and a nonlinear one were estimated. The nonlinear specification allows investigating the impact of selected socio-demographic variables, in this case income and travel time, on the parameters of the models and on willingness to pay indicators. Such indicators permit to complement the qualitative discussion of the results with quantitative analyses and provide a useful background for policy evaluation and planning.2
Publication date / Date received: 2012-01-01
Publication status: Published
Event name: 91st Annual Meeting of the Transportation Research Board (TRB 2012)
Event date: January 2012
Place: Washington, D.C., USA
Language: English
DBID source: FORM-1416230138
, Ciari, Francesco, Axhausen, Kay W., 2012 >>
Author(s): Ciari, Francesco, Axhausen, Kay W.
Title: Carsharing membership
Subtitle: A model for Switzerland
Published in: Arbeitsberichte Verkehrs- und Raumplanung
Volume: 742
Publication date / Date received: 2012-01-01
Publication status: Zürich
Publication status: Accepted
Subjects: Raumordnung, Städtebau, Landschaftsarchitektur|Spatial and Urban Planning, Landscape Architecture, Verkehr und Transport|Traffic and Transportation, Verkehrsplanung, Strassen- und Eisenbahnbau|Traffic, Highway and Railroad Engineering
Language: English
Review status: Internally reviewed
DBID source: FORM-1324660745
, Ciari, Francesco, Axhausen, K.W., 2012 >>
Author(s): Ciari, Francesco, Axhausen, K.W.
Title: Choosing carpooling or carsharing as a mode
Subtitle: Swiss stated choice experiments
Publication date / Date received: 2012-01-01
Publication status: Washington, DC
Publication status: Published
Event name: 91st Annual Meeting of the Transportation Research Board
Event date: January 22-26, 2012
Place: Washington, DC, USA
Language: English
Review status: Peer reviewed
DBID source: FORM-1328218995
, Ciari, Francesco, 2012 >>
Author(s): Ciari, Francesco
Title: Études et modÉlisation de l'auto-partage et du co-voiturage
Publication date / Date received: 2012-01-01
Publication status: Published
Language: French
DBID source: FORM-1359634043
, Ciari, Francesco, 2012 >>
Author(s): Ciari, Francesco
Title: Why do people carpool
Subtitle: Results from a Swiss survey
Abstract: A recent study aimed to estimate the potential of carpooling in Switzerland. Part of this study was a survey in which the attitude of the public towards this transport option was investigated using both multi-response questions and a stated preference (SP) experiment. This paper reports on the results of the multi-response questionnaire. The main contribution of this paper is to give an insight on the reasons that motivate Swiss people to consider car-pooling as a possible alternative to driving alone with their own private car. Additionally, a subset of the questionnaire was the basis for factor analysis and cluster analysis. Four different clusters were found which are supposed to represent the main orientations toward carpooling among the population. This analysis is valuable to figure out possible strategies in order to introduce carpooling at a larger scale in Switzerland. The results of the questionnaire show that some parts of the population would be ready to embrace this mode of transport, in some cases even enthusiastically. This is true in particular for well educated, relatively affluent people. However, the responses suggest also that in order to exploit this potential, a system able to address some of the typical issues related to carpooling should be set-up. Safety is important but not the most important issue for potential participants. Practical aspects, like the guarantee of being able to go back home as a passenger if pools are arranged on a one-way basis, are those which worry respondents the most and, therefore, the most critical for carpooling success.
Publication date / Date received: 2012-01-01
Publication status: Ascona
Publication status: Published
Subjects: Carpooling, Survey, Factor Analysis, Cluster analysis
Event name: 12th Swiss Transport Research Conference (STRC 2012)
Event date: May 2-4, 2012
Place: Ascona, Switzerland
Language: English
Review status: Peer reviewed
Keyword: Carpooling, Survey, Factor Analysis, Cluster analysis
DBID source: FORM-1324660638
, Ciari, Francesco, 2012 >>
Author(s): Ciari, Francesco
Title: Sharing as a key to rethink urban mobility
Subtitle: Investigating and modeling innovative transport systems
Abstract: 2
Publication date / Date received: 2012-01-01
Publication status: Zürich
Publication status: Published
Language: English
ETH dissertation number: 20691
DBID source: FORM-1346847419
DOI: 10.3929/ethz-a-009756547
Nebis system number: 009756547
, Ciari, Francesco, 2012 >>
Author(s): Ciari, Francesco
Title: Modeling Location Decisions of Retailers with an Agent-Based Approach
Publication date / Date received: 2012-01-01
Publication status: Published
Event name: 91st Annual Meeting of the Transportation Research Board
Event date: January 22-26, 2012
Place: Washington, DC, USA
Language: English
Review status: Unknown
DBID source: FORM-1328218758
, Ciari, Francesco, 2012 >>
Author(s): Ciari, Francesco
Title: Introduction to MATSim
Publication date / Date received: 2012-01-01
Publication status: Published
Event date: Lecture at the University of Avignon in February 2012
Language: English
DBID source: FORM-1346874311
, Ciari, Francesco, 2012 >>
Author(s): Ciari, Francesco
Title: Entscheidungsmodelle zum car sharing und car pooling
Publication date / Date received: 2012-01-01
Publication status: Published
Event name: IVT Seminar: Fahrzeuge teilen
Event date: May 16, 2012
Place: Zürich, Switzerland
Language: German
DBID source: FORM-1342018330
, Ciari, Francesco, 2012 >>
Author(s): Ciari, Francesco
Title: Carpooling in Switzerland
Subtitle: A Qualitative Survey and a Stated Choice Experiment
Publication date / Date received: 2012-01-01
Publication status: Published
Language: English
DBID source: FORM-1395327825
, Ciari, Francesco, 2011 >>
Author(s): Ciari, Francesco
Title: Modeling location decisions of retailers with an agent-based approach
Abstract: The paper reports about a project, where an agent-based module of location decisions of retailers has been implemented into the agent-based traffic simulator MATSim-T. The retailer model focuses on location choice of retailers. Retailers implement a simple strategies in order to maximize the number of their customers. The paper discusses first the conceptual background of the model. The results obtained using a large scale scenario, the urban agglomeration of Zurich, and where retailers are applying different location strategies, are presented and thoroughly discussed.2
Publication date / Date received: 2011-05-01
Publication status: Published
Subjects: Retail planning, Location choice, Microsimulation
Event name: 11th Swiss Transport Research Conference
Event date: May 7–9, 2011
Place: Ascona, Switzerland
Language: English
Review status: Peer reviewed
Keyword: Retail planning, Location choice, Microsimulation
DBID source: FORM-1304791461
DOI: 10.3929/ethz-a-006686299
Nebis system number: 006686299
, Mühlethaler, Franz, Axhausen, Kay W., Ciari, Francesco, Tschannen-Süess, Monika, Gertsch-Jossi, Ursula, 2011 >>
Author(s): Mühlethaler, Franz, Axhausen, Kay W., Ciari, Francesco, Tschannen-Süess, Monika, Gertsch-Jossi, Ursula
Title: Potenzial von Fahrgemeinschaften
Abstract: Wenn eine Person für eine Fahrt, welche sie ohnehin durchführt, in ihrem Auto andere Personen mitnimmt, dann spricht man von einer Fahrgemeinschaft oder im englischen Sprachgebrauch von Car Pooling. Die Idee, diese Mobilitätsform durch Vermittlung ge- zielt zu fÖrdern, stammt aus der Zeit des "Ölschocks" in den Siebzigerjahren des letzten Jahrhunderts und wurde seither in vielen Ländern auf unterschiedliche Art verfolgt. Trotz einigen Erfolgen bleibt der Eindruck, dass Car Pooling sein vorhandenes Potenzial bei weitem nicht ausschÖpft und dass dadurch ein einfaches Mittel zu einem Effizienzgewinn und in der Folge mehr Nachhaltigkeit im Mobilitätsbereich ungenutzt bleibt. Es gibt, in der Schweiz und international, eine umfangreiche Forschung zu bestimmten Ausprägungen des Car Pooling, zum Benutzerverhalten und zu allgemeinen Einstellun- gen dieser Mobilitätsform gegenüber. Die Frage, warum sich Fahrgemeinschaften bisher nicht breit durchgesetzt haben, konnte aber nirgends schlüssig beantwortet werden. Die vorliegende Forschungsarbeit geht einen Schritt zurück und stellt sich die Frage, ob das Potenzial für Fahrgemeinschaften wirklich so gross ist, wie gemeinhin angenommen wird, und ob es nicht durch tatsächliche Hindernisse und persÖnliche Vorbehalte so weit ein- geschränkt wird, dass es sich gar nicht lohnt, in die Idee des Car Pooling zu investieren. Für das Projekt wurde eine vÖllig neue Methode der Untersuchung angewandt, welche eigens aus der Kombination bestehender Methoden entwickelt wurde. Einerseits wurden umfangreiche Befragungen zum Mobilitätsverhalten und zu den Einstellungen gegenüber Car Pooling durchgeführt. Andererseits ergab eine Simulation, wie viele Fahrgemein- schaften sich unter bestimmten Voraussetzungen bilden lassen. Damit konnten objektive und subjektive Faktoren bei der Bildung der Fahrgemeinschaften einbezogen werden. Eine besonders günstige Situation für Car Pooling ergibt sich unter den Mitarbeitenden eines Unternehmens für deren regelmässige Fahrten zur Arbeit. Untersucht wurden nur wenige ausgewählte Unternehmen, was es ermÖglichte, viele Simulationsdurchläufe zu machen und damit die wichtigen Einflussfaktoren auf die Bildung der Fahrgemeinschaf- ten detailliert zu untersuchen. Es zeigte sich, dass auch in kleineren Unternehmen mit weniger als 100 beteiligungswilligen Mitarbeitenden ein grosses Potenzial für Fahrge- meinschaften besteht. Leider sind die Voraussetzungen heute aber eher ungünstig, so dass mit den vorhandenen Rahmenbedingungen dieses Potenzial kaum ausgeschÖpft werden kann. Um ein nicht nur in einer Spezialsituation gültiges Resultat zu erhalten, wurde neben Un- ternehmen auch die gesamte Region Zürich untersucht. Hier wurde die Befragung er- gänzt mit Fragen nach dem bevorzugten Transportmittel für konkrete Fahrten und unter variierenden Bedingungen (d.h. durch eine sogenannte Stated-Preference-Befragung). Daraus konnte ein Verhaltensmodell generiert werden, welches in der Simulation dann eingesetzt wurde um Fahrgemeinschaften auszuschliessen, welche von den Beteiligten eher nicht akzeptiert würden. Resultat ist, dass bei der flächendeckenden Einführung von Car Pooling rund 30% der Personen, welche heute mit dem eigenen Auto unterwegs sind, zu Mitfahrern werden, und dadurch im verkehrlichen und Umweltbereich Einsparun- gen zwischen 10 und 20% erzielbar sind. Mit der Simulation konnte nicht nur das Potenzial an sich ermittelt werden, sondern es wurde auch analysiert, wie hohe Anfangshürden bei der AusschÖpfung desselben zu überwinden sind. Es konnte beispielsweise bestimmt werden, dass in einer Region wie Zürich die kritische Masse an Benutzern einer Vermittlungsplattform, welche erforderlich ist, damit diese Plattform nachhaltig Erfolg hat, in der GrÖssenordnung von 10'000 liegt. Fazit aus dieser methodisch innovativen Forschungsarbeit ist, dass ein Potenzial für Fahrgemeinschaften besteht, welches man aus verkehrlichen, wirtschaftlichen und Öko- logischen Gründen nicht ausser Acht lassen darf. Es wird deshalb empfohlen, im Rah- men einer zu entwickelnden Gesamtstrategie Mobilität die Kräfte zu bündeln und die AusschÖpfung des vorhandenen Potenzials konkret zu planen.
Published in: Eidgenössisches Departement für Umwelt, Verkehr, Energie und Kommunikation UVEK, Bundesamt für Strassen
Volume: 1371
Publication date / Date received: 2011-01-01
Publication status: Bern
Publication status: Published
Subjects: Verkehr und Transport|Traffic and Transportation
Language: German
DBID source: FORM-1355135340
Nebis system number: 007580700
, Horni, Andreas, Ciari, Francesco, 2011 >>
Author(s): Horni, Andreas, Ciari, Francesco
Title: Microsimulating Choices of Different Agent Types
Subtitle: Shoppers and Retailers
Publication date / Date received: 2011-01-01
Publication status: Published
Event name: Rational Choice Seminar
Event date: November 28 - December 1, 2011
Place: Venice, Italy
Language: English
Review status: Peer reviewed
DBID source: FORM-1322829846
, Ciari, Francesco, 2011 >>
Author(s): Ciari, Francesco
Title: Matsim, an agent based traffic simulator
Subtitle: Concepts, framework, and applications
Publication date / Date received: 2011-01-01
Publication status: Published
Event name: CTS Seminar
Event date: August 12, 2011
Place: Chicago, Illinois, USA
Language: English
Review status: Unknown
DBID source: FORM-1314261488
, Meister, Konrad, Balmer, Michael, Ciari, Francesco, Horni, Andreas, Rieser, Marcel, Waraich, Rashid A., Axhausen, Kay W., 2010 >>
Author(s): Meister, Konrad, Balmer, Michael, Ciari, Francesco, Horni, Andreas, Rieser, Marcel, Waraich, Rashid A., Axhausen, Kay W.
Title: Large-scale agent-based travel demand optimization applied to Switzerland, including mode choice
Abstract: 2
Published in: Working paper / Institute for Transport Planning and Systems
Volume: 625
Publication date / Date received: 2010-01-01
Publication status: Zürich
Publication status: Published
Subjects: Computeranwendungen|Computer Applications
Language: English
Review status: Internally reviewed
DBID source: FORM-1281363069
DOI: 10.3929/ethz-a-006100288
Nebis system number: 006100288
, Ciari, Francesco, Schüssler, Nadine, Axhausen, Kay W., 2010 >>
Author(s): Ciari, Francesco, Schüssler, Nadine, Axhausen, Kay W.
Title: Estimation of car-sharing demand using an activity-based microsimulation approach
Subtitle: Model discussion and preliminary results
Published in: Arbeitsberichte Verkehrs- und Raumplanung
Volume: 632
Publication date / Date received: 2010-01-01
Publication status: Zürich
Publication status: Published
Language: English
Review status: Internally reviewed
DBID source: FORM-1281362261
DOI: 10.3929/ethz-a-006125588
Nebis system number: 006125588
, Ciari, Francesco, Balmer, Michael, Axhausen, Kay W., 2010 >>
Author(s): Ciari, Francesco, Balmer, Michael, Axhausen, Kay W.
Title: Estimating the Potential of a Large Scale Car-Sharing System with an Agent-Based Microsimulation Approach
Abstract: This paper reports on ongoing work aimed to estimate the potential use of car sharing at large scale in urban areas as a mean to mitigate congestion and social exclusion. The methodology used to assess the potential of the system is agent based modelling. An existing open source software, called MATSim-T (Multi-Agent Transport Simulation Toolkit, http://matsim.org), has been enhanced within this project to allow the modelling of the car sharing mode. In order to add the car sharing mode to the simulation toolkit a cost structure reflecting the implementation scheme of the system has been defined. The simulated individuals (agents) will have this additional option and will choose it, or not, according to the generalized cost it generates for their schedules (plans). The travelling time for this mode, is analogue to that for car and it is calculated on a congested network, where all cars are simulated, adding realism to the model. The results of a test case for the city of Zurich, a scenario with about 160'000 agents, are reported and discussed.2
Publication date / Date received: 2010-01-01
Publication status: Zürich
Publication status: Published
Subjects: Car sharing, Microsimulation, Agent based
Event name: 12th World Conference on Transport Research (WCTR)
Event date: July 11-15, 2010
Place: Lisbon, Portugal
Language: English
Review status: Unknown
Keyword: Car sharing, Microsimulation, Agent based
DBID source: FORM-1276266019
DOI: 10.3929/ethz-a-006080878
, Ciari, F., 2010 >>
Author(s): Ciari, F.
Title: Potenzial von Fahrgemeinschaften
Publication date / Date received: 2010-01-01
Publication status: Published
Event name: ASTRA-Informationsveranstaltung
Event date: February, 2010
Place: Zurich, Switzerland
Language: German
Review status: Unknown
DBID source: FORM-1304001142
, Balmer, Michael, Meister, Konrad, Waraich, Rashid A., Horni, Andreas, Ciari, Francesco, Axhausen, Kay W., 2010 >>
Author(s): Balmer, Michael, Meister, Konrad, Waraich, Rashid A., Horni, Andreas, Ciari, Francesco, Axhausen, Kay W.
Title: Agentenbasierte Simulation für location based services
Abstract: Mobilität bildet den Grundpfeiler auf dem ortsbasierte Dienstleistungen (Location Based Services) ruhen. Darum ist ein präzises Abbild der Mobilität der zu erreichenden Zielgruppen für diese Art von Diensten unerlässlich. Mikrosimulationsmodelle zur Generierung von Mobilität liefern hierzu eine vollständige Mobilitätsanalyse, inklusive der Entscheidungsfindungsprozesse mobiler Individuen und somit die Verknüpfung statistisch relevanter Kenngrössen für unterschiedliche demographische und sozio-demographische Gruppierungen mit detaillierter, dynamischer Mobilität. Diese Eigenschaften bilden den Kernaspekt zur Dimensionierung von ortsbasierte Dienstleistungen. Basierend auf dem Open-Source Forschungsprojekt MATSim ist das erste, vollständig integrierte Umlegungs- und Verhaltensmodell für Zeit-, Routen-, Verkehrsmittel- und Ortswahl für die gesamte Schweiz entstanden.
Publication date / Date received: 2010-01-01
Publication status: Zürich
Publication status: Published
Subjects: standortbezogene Dienste, Verkehrsplanung, Multi-Agenten Mikrosimulation, MATSim, Schweiz
Language: English
Review status: Internally reviewed
Keyword: standortbezogene Dienste, Verkehrsplanung, Multi-Agenten Mikrosimulation, MATSim, Schweiz
DBID source: FORM-1275851897
, Meister, Konrad, Rieser, Marcel, Ciari, Francesco, Horni, Andreas, Balmer, Michael, Axhausen, Kay W., 2009 >>
Author(s): Meister, Konrad, Rieser, Marcel, Ciari, Francesco, Horni, Andreas, Balmer, Michael, Axhausen, Kay W.
Title: Anwendung eines agentenbasierten Modells der Verkehrsnachfrage auf die Schweiz
Abstract: Heutige Fragen an die Verkehrsplanung wecken ein Bedürfnis zur Abschätzung der tageszeitlichen Dynamik der Verkehrsnachfrage. Agentenbasierte Modelle des Verkehrsverhaltens simulieren individuelle Aktivitätenpläne und damit explizit die Tageszeit. In dem Beitrag wird die Anwendung des Simulationssystems MATSim-T auf den Straßenverkehr der ganzen Schweiz präsentiert. Die Dynamik der Verkehrsnachfrage kann gut abgebildet werden, was ein Vergleich mit Zähldaten und repräsentativen Beobachtungen zeigt. Transport planning questions that arise today require an estimation of within-day variation of travel demand. Agent-based models of travel behavior simulate daily activity plans and by this, time of day explicitly. The article presents the application of the simulation system MATSim-T to the motorized individual transport of all of Switzerland. The dynamics of travel demand can be replicated quite well as can be shown by comparison with counting data and representative surveys. Transport planning questions that arise today require an estimation of within-day variation of travel demand. Agent-based models of travel behavior simulate daily activity plans and by this, time of day explicitly. The article presents the application of the simulation system MATSim-T to the motorized individual transport of all of Switzerland. The dynamics of travel demand can be replicated quite well as can be shown by comparison with counting data and representative surveys.
Published in: Strassenverkehrstechnik
Volume: 53
Issue: 5
Pages: 269 - 280
ISSN: 0039-2219
Publication date / Date received: 2009-01-01
Publication status: Bonn-Bad Godesberg
Publication status: Published
Subjects: Architektur, Gebaute Umwelt und Umweltgestaltung allgemein|Architecture, Built Environment and Environmental Design, General
Language: German
Review status: Peer reviewed
DBID source: PP-51050
Nebis system number: 000055725
, Horni, Andreas, Ciari, Francesco, 2009 >>
Author(s): Horni, Andreas, Ciari, Francesco
Title: Modeling Shopping Customers & Retailers with the Activity-based Multi-agent Transport Simulation MATSim
Publication date / Date received: 2009-01-01
Publication status: Published
Event name: CCSS Seminar "Modeling Complex Socio-Economic Systems and Crises"
Event date: April 7, 2009
Place: Zurich, Switzerland
Language: English
Review status: Unknown
DBID source: FORM-1306342294
, Ciari, Francesco, Balmer, Michael, Axhausen, Kay W., 2009 >>
Author(s): Ciari, Francesco, Balmer, Michael, Axhausen, Kay W.
Title: Large scale use of collective taxis
Subtitle: A multi-agent approach
Abstract: This paper reports on ongoing work aimed to estimate the potential use of collective taxis at large scale in urban areas as a mean to mitigate congestion and social exclusion. The methodology used to assess the potential of the system is agent based modeling. An existing open source software project, called MAT-Sim-T (Multi-Agent Transport Simulation Toolkit, http://matsim.org), has been enhanced within this project in order to allow the modeling of the taxi mode. Cur-rently the way in which the taxi mode has been added is quite simple. A cost structure reflecting the implementation scheme of the taxi system has been de-fined. The simulated individuals (agents) will have this additional option and will choose it, or not, according to the generalized cost it generate for their schedules (plans). Even in this simple form the model allows for a preliminary estimation of the collective taxi potential. The results of a test case for the city of Zurich, a sce-nario with about 160'000 agents, are reported and discussed.2
Published in: Arbeitsberichte Verkehrs- und Raumplanung
Volume: 594
Publication date / Date received: 2009-01-01
Publication status: Zürich
Publication status: Published
Subjects: Angewandte Informatik, Künstliche Intelligenz|Applied Computer Science, Artificial Intelligence
Event name: 12th International Conference on Travel Behaviour Research
Event date: December 13-16, 2009
Place: Jaipur, India
Language: English
Review status: Peer reviewed
DBID source: FORM-1287577708
DOI: 10.3929/ethz-a-005916505
Nebis system number: 005916505
, Ciari, Francesco, Balmer, Michael, Axhausen, Kay W., 2009 >>
Author(s): Ciari, Francesco, Balmer, Michael, Axhausen, Kay W.
Title: Concepts for a large scale car-sharing system: Modelling and evaluation with an agent-based approach
Abstract: The increasing success of car-sharing worldwide – a system in which individuals participating in a specific program are allowed to use vehicles from a fleet on an hourly basis - should not hide the fact that it is still a niche product. This paper is aimed at renewing the debate on car-sharing and its future development. There is agreement that car-sharing produces benefits for the transport system, the environment and society. However, as shown in this paper, currently, the scale of such benefits is minimal. This is a reason to attempt the implementation of such a system at a much larger scale. A car-sharing scheme of this type is outlined and some concepts on which the system would be based are suggested. These are the capillarity of the system, its flexibility and its integration with other urban mobility tools. For the future implementation of such a scheme, finding a methodology that would be able to realistically assess its potential is crucial. This paper discusses the methodologies used so far to investigate car-sharing potential and explains why an agent-based approach has been chosen for this project. A framework for modeling a large-scale car-sharing scheme with such a methodology is proposed within the context of MATSim-T, an existing agent-based traffic micro-simulation tool.
Publication date / Date received: 2009-01-01
Publication status: Published
Event name: 88th Annual Meeting of the Transportation Research Board (TRB) 2009
Event date: January 2009
Place: Washington, D.C.
Language: English
DBID source: FORM-1395318918
, Ciari, Francesco, Balmer, Michael, Axhausen, Kay W., 2009 >>
Author(s): Ciari, Francesco, Balmer, Michael, Axhausen, Kay W.
Title: Concepts for a large scale car-sharing system
Subtitle: Modelling and evaluation with an agent-based approach
Abstract: The increasing success of car-sharing worldwide – a system in which individuals participating in a specific program are allowed to use vehicles from a fleet on an hourly basis - should not hide the fact that it is still a niche product. This paper is aimed at renewing the debate on car-sharing and its future development. There is agreement that car-sharing produces benefits for the transport system, the environment and society. However, as shown in this paper, currently, the scale of such benefits is minimal. This is a reason to attempt the implementation of such a system at a much larger scale. A car-sharing scheme of this type is outlined and some concepts on which the system would be based are suggested. These are the capillarity of the system, its flexibility and its integration with other urban mobility tools. For the future implementation of such a scheme, finding a methodology that would be able to realistically assess its potential is crucial. This paper discusses the methodologies used so far to investigate car-sharing potential and explains why an agent-based approach has been chosen for this project. A framework for modeling a large-scale car-sharing scheme with such a methodology is proposed within the context of MATSim-T, an existing agent-based traffic micro-simulation tool.
Book title: Compendium of papers DVD, TRB 88th annual meeting : January 11 - 15, 2009, Washington, D.C.
Publication date / Date received: 2009-01-01
Publication status: Washington, DC
Publication status: Published
Event name: 88th Annual Meeting of the Transportation Research Board (TRB) 2009
Event date: January 11-15, 2009
Place: Washington, D.C., USA
Language: English
Review status: Peer reviewed
DBID source: PP-51222, FORM-1395318918
, Ciari, Francesco, 2009 >>
Author(s): Ciari, Francesco
Title: Supply Agents in MATSim
Subtitle: Some Results
Publication date / Date received: 2009-01-01
Publication status: Published
Event name: 1st MATSim Users' Group Meeting
Event date: April 2009
Place: Berlin, Germany
Language: English
Review status: Unknown
DBID source: FORM-1306342049
, Ciari, Francesco, 2009 >>
Author(s): Ciari, Francesco
Title: Modeling collective taxis in a multi-agent traffic simulation framework
Abstract: This paper report on ongoing work aimed to explore new solutions to urban traffic problems. The use of collective taxi services at a large scale is proposed. It is seen, if used and properly integrated together with other flexible systems, as a mean to reduce private car travel. The paper discusses motivations and possible factors of success of the system, and sketches the characteristics that such a service should have. Moreover, the problem of estimating the potential of a new transport option in a reliable way is confronted. It is suggested that the use of agent based microsimulation might be appropriate. The planned implementation in an existing modelling framework of this kind, MATSim-T, is also described.
Publication date / Date received: 2009-01-01
Publication status: Ascona
Publication status: Published
Subjects: collective taxi, demand response transport, agent based simulations, MATSim-T, STRC
Event name: 9th Swiss Transport Research Conference (STRC 2009)
Event date: September 9-11, 2009
Place: Monte Verità, Switzerland
Language: English
Review status: Peer reviewed
Keyword: collective taxi, demand response transport, agent based simulations, MATSim-T, STRC
DBID source: PP-51227
DOI: 10.3929/ethz-a-005888724
Nebis system number: 005888724
, Meister, Konrad, Rieser, Marcel, Ciari, Francesco, Horni, Andreas, Balmer, Michael, Axhausen, Kay W., 2008 >>
Author(s): Meister, Konrad, Rieser, Marcel, Ciari, Francesco, Horni, Andreas, Balmer, Michael, Axhausen, Kay W.
Title: Anwendung eines agentenbasierten Modells der Verkehrsnachfrage auf die Schweiz
Abstract: Heutige Fragen an die Verkehrsplanung wecken ein Bedürfnis zur Abschätzung der tageszeitlichen Dynamik der Verkehrsnachfrage. Agentenbasierte Modelle des Verkehrsverhaltens simulieren individuelle Aktivitätenpläne und damit explizit die Tageszeit. In diesem Artikel wird die Anwendung des Simulationssystems MATSim-T auf den Strassenverkehr der ganzen Schweiz präsentiert. Die Dynamik der Verkehrsnachfrage kann gut abgebildet werden, was ein Vergleich mit repräsentativen Beobachtungen zeigt.2
Book title: HEUREKA '08, Optimierung in Verkehr und Transport
Published in: FGSV ; 002/90
Pages: 1 - 22
ISBN: 978-3-939715-48-1
Publication date / Date received: 2008-01-01
Publication status: Köln
Publication status: Published
Event name: Heureka '08
Event date: March 5-6, 2008
Place: Stuttgart, Germany
Language: German
Review status: Peer reviewed
DBID source: PP-41330
DOI: 10.3929/ethz-a-005564901
, Ciari, Francesco, Löchl, Michael, Axhausen, Kay W., 2008 >>
Author(s): Ciari, Francesco, Löchl, Michael, Axhausen, Kay W.
Title: Location decisions of retailers
Subtitle: an agent-based approach
Abstract: The paper reports about an ongoing project, where the goal is to develop an agent-based module of location decisions of retailers which will eventually be implemented into the larger agentbased model MATSim-T. So far, this model system is basically a fast microscopic transport model, where the supply side is not explicitly modeled. The research goals of this paper are multiple. Since the envisaged retailer module will focus on location choice of retailers and in particular their possible adoption strategies facing the introduction of road pricing, a literature review on those issues and the current knowledge is summarized. Those insights of retailer location decisions described in the literature are enriched through the report of a series of in-depth interviews, which have been conducted with retailers of various product groups in Germany and Switzerland in the winter of 2008. A literature overview on agent-based descriptions of retail markets shows potentially suitable approaches of the modelling of retailers. Moreover, a short overview on MATSim-T is provided. Finally a conceptual model for the new retailer agent is proposed, discussing the main issues arising with the introduction of such types of agents in MATSim-T.2
Published in: Arbeitsbericht Verkehrs- und Raumplanung
Volume: 499
Publication date / Date received: 2008-01-01
Publication status: Zürich
Publication status: Published
Subjects: Verkehr und Transport|Traffic and Transportation, Retail planning, Location choice, Microsimulation
Event name: 15th International Conference on Recent Advances in Retailing and Services Science
Event date: July 14-17, 2008
Place: Zagreb, Croatia
Language: English
Review status: Peer reviewed
Keyword: Retail planning, Location choice, Microsimulation
DBID source: PP-41318
DOI: 10.3929/ethz-a-005589966
Nebis system number: 005589966
, Ciari, Francesco, Balmer, Michael, Axhausen, Kay W., 2008 >>
Author(s): Ciari, Francesco, Balmer, Michael, Axhausen, Kay W.
Title: Concepts for a large scale car-sharing system
Subtitle: Modelling and evaluation with an agent-based approach
Abstract: The increasing success of car-sharing worldwide – a system in which individuals participating in a specific program are allowed to use vehicles from a fleet on an hourly basis - should not hide the fact that it is still a niche product. This paper is aimed at renewing the debate on car-sharing and its future development. There is agreement that car-sharing produces benefits for the transport system, the environment and society. However, as shown in this paper, currently, the scale of such benefits is minimal. This is a reason to attempt the implementation of such a system at a much larger scale. A car-sharing scheme of this type is outlined and some concepts on which the system would be based are suggested. These are the capillarity of the system, its flexibility and its integration with other urban mobility tools. For the future implementation of such a scheme, finding a methodology that would be able to realistically assess its potential is crucial. This paper discusses the methodologies used so far to investigate car-sharing potential and explains why an agent-based approach has been chosen for this project. A framework for modeling a large-scale car-sharing scheme with such a methodology is proposed within the context of MATSim-T, an existing agent-based traffic micro-simulation tool.2
Published in: Working paper / IVT
Volume: 517
Publication date / Date received: 2008-01-01
Publication status: Zürich
Publication status: Published
Language: English
Review status: Peer reviewed
DBID source: PP-41317
Nebis system number: 004231702
, Ciari, Francesco, Balmer, Michael, Axhausen, Kay W., 2008 >>
Author(s): Ciari, Francesco, Balmer, Michael, Axhausen, Kay W.
Title: A new mode choice model for a multi-agent transport simulation
Abstract: This paper reports the development of a new mode choice model system, embedded in a multiagent transport simulation, aiming to obtain both a spatially and behaviourally fine representation of modal choice of the simulated individuals. The new model addresses the subtour level, substantially improving on previous work, which either addresses the trip or the tour. A subtour is any sequence of trips which starts and ends at the same location; a tour starts and ends at home. The subtour resolution allows us to consistently account for the differential availability of modes. Subtour mode choices are otherwise treated as independent events. The subtour level allows us to capture the noon peak behaviour appropriately. The model system has two stages both formulated as multinomial logit models. First, the mobility tool ownership is estimated for each agent; second, given this choice the mode choice is addressed at the sub-tour level of the individual daily activity chain. We considered car ownership and public transport season ticket ownership and their possible combinations. The subtour models for walk, bicycle, car, car passenger and public transport are estimated by subtour's main purpose to account for taste differences. The attributes of alternatives' utility functions are socio-demographic characteristics of individuals, such as age, income, mobility tool ownership, etc., and distance covered. The mode choice module is integrated in the simulation toolkit MATSim-T (Multi- Agent Transport Simulation Toolkit). The module has been tested with a large scale scenario, based on Swiss data, and proved able to reproduce real modal choices of the population with a fine spatial resolution. Results are presented for a scenario in which the whole Swiss population is simulated. They are compared to the most recent Swiss national travel diary survey.
Pages: 1 - 20
Publication date / Date received: 2008-01-01
Publication status: Ascona
Publication status: Published
Subjects: Agent Based Simulations, MATSim-T, Initial Demand, Mode Choice, Discrete Choice
Event name: 8 th Swiss Transport Research Conference
Event date: October 15-17, 2008
Place: Ascona, Switzerland
Language: English
Review status: Unknown
Keyword: Agent Based Simulations, MATSim-T, Initial Demand, Mode Choice, Discrete Choice
DBID source: PP-41316
, Ciari, F., Löchl, M., 2008 >>
Author(s): Ciari, F., Löchl, M.
Title: Location choice of retailers
Subtitle: An agent-based approach
Publication date / Date received: 2008-01-01
Publication status: Published
Event name: 15th International Conference on Recent Advances in Retailing and Services Science
Event date: July 2008
Place: Zagreb, Croatia
Language: English
Review status: Unknown
DBID source: FORM-1306344409
, Ciari, Francesco, Balmer, Michael, Axhausen, Kay W., 2007 >>
Author(s): Ciari, Francesco, Balmer, Michael, Axhausen, Kay W.
Title: Mobility tool ownership and mode choice decision processes in multi-agent transportation simulation
Abstract: This paper presents mode choice decision processes in the context of MATSim-T (Multi-Agent Transport Simulation Toolkit), a simulation toolkit which uses the concept of Evolutionary Algorithm (EA) in order to obtain individual, daily, travel demand. The module described in this paper implements logit models and is embedded in MATSim-T as a planning module. At a first stage the mobility tool ownership among the population, based on the Swiss Mikrozenzus data of 2005, is estimated with a logit model. Then a mode choice is performed at the tour level of the daily activity chain. A multiple choice among four alternatives, walk, bicycle, car, transit, is modeled. The module is integrated in the pre-process stage of MATSim-T and its goal is to produce a reasonable tour based mode choice for each individual. The attributes considered in the utility functions of alternatives are sociodemographic characteristics of the population, such as age, income, employment, car ownership, etc. Even in this simple form the module represents a substantial improvement of the toolkit, increasing its ability to simulate realistic traffic patterns. The module has been tested with different, large scale, scenarios based on Swiss data. The presented results show that the module is able to reproduce modal choices consistent with that data.
Published in: Working paper / IVT
Volume: 475
Publication date / Date received: 2007-01-01
Publication status: Zürich
Publication status: Published
Subjects: Agent Based Simulations, MATSim-T, Initial Demand, Mode Choice, Discrete Choice Models, STRC
Event name: 7th Swiss Transport Research Conference
Event date: September 12-14, 2007
Place: Monte Verità, Ascona, Switzerland
Language: English
Review status: Peer reviewed
Keyword: Agent Based Simulations, MATSim-T, Initial Demand, Mode Choice, Discrete Choice Models, STRC
DBID source: PP-33324
DOI: 10.3929/ethz-a-005564854
Nebis system number: 005564854

 

 

 

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