Faculty Profiles - YAMAMOTO Toshiyuki

Papers - YAMAMOTO Toshiyuki

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Comparison of the variability of link travel time estimates between different frequency probe vehicle data

Kai Liu and Toshiyuki Yamamoto

Proceedings of Infrastructure Planning Vol. 31 2005.6

プローブカーデータを用いたマルチモード経路案内システム『PRONAVI』の開発と今後の展開

三輪富生，森川高行，山本俊行，藤田貴司，中田貴之，竹内純一

土木計画学研究・講演集 Vol. 31 2005.6

公共交通利用に対するポイント制度「交通エコポイント」の導入が意識・行動変化に及ぼす影響の基礎的分析

倉内慎也，永瀬貴俊，森川高行，山本俊行

土木計画学研究・講演集 Vol. 31 2005.6

動的経路誘導システム『PRONAVI』の開発経緯

戸谷成寿，森川高行，山本俊行，倉内慎也

土木学会中部支部研究発表会講演概要集 page： 477-478 2005.3

交通エコポイントシステムの開発とその効果に関する基礎的分析

佐藤仁美，永瀬貴俊，倉内慎也，森川高行，山本俊行

土木学会中部支部研究発表会講演概要集 page： 319-320 2005.3

P-DRGS and Eco-point TDM Project in the Second Stage at The Aichi Expo

Yamamoto, T.

Journal of International Association of Traffic and Safety Sciences Vol. 29 ( 1 ) page： 110-113 2005.1

An overview of PCATS/DEBNetS micro-simulation system: its development, extension, and application to demand forecasting

Ryuichi Kitamura, Akira Kikuchi, Satoshi Fujii and Toshiyuki Yamamoto

Simulation Approaches in Transportation Analysis: recent advances and challenges page： 371-399 2005

An Investigation on En-Route Updating Method of Travel Time Using the Information of Travel Speed Transition Reviewed

page： 451-456 2005

Language：Japanese Publishing type：Research paper (scientific journal)

With the development in IT, various techniques of travel time prediction have been developed recently. Probe-car system using running cars as sensors firstly attains travel information in detail, such as the velocity data and used route, on more extensive area. This research aims to develop a method to predict travel time which will be supplied to drivers during their trip based on this new data source. The algorithm developed in this study, which combines the travel time history with the real time speeds of monitor cars, are found to improve the accuracy of travel time prediction.

FAMOS: the Florida activity mobility simulator

Ram M. Pendyala, Ryuichi Kitmaura,Akira Kikuchi,Toshiyuki Yamamoto and Satoshi Fujii

Preprint CD-ROM of the 84th Annual Meeting of the Transportation Research Board page： CD-ROM 2005

Language：English

The development of activity-based travel demand modeling systems ushers in a new era in transportation demand forecasting and planning. This paper describes a comprehensive multimodal activity-based travel demand forecasting system developed for implementation in the State of Florida. The effort has resulted in the development of FAMOS, the Florida Activity Mobility Simulator. FAMOS consists of two main modules that together comprise a microsimulation model system for modeling activity-travel patterns of individuals. They are the Household Attributes Generation System (HAGS) and the Prism-Constrained Activity Travel Simulator (PCATS). The model system has been developed and estimated using household activity and travel data collected in Southeast Florida in 2000. Results of the model development effort are very promising and demonstrate the applicability of activity-based model systems in travel demand forecasting practice. This paper provides an overview of the model system together with a description of its features and capabilities and preliminary validation results.

Analysis of user impressions of railway stations, focusing on the effects of adjunct retail facilities

Cheng Li, Toshiyuki Yamamoto and Taka Morikawa

Urban Transport XI, urban transport and the environment in the 21st century page： 849-858 2005

Language：English Publishing type：Research paper (scientific journal)

This paper examines the cognitive structure of the impressions that users have of railway stations and quantifies the effect of different types of adjunct stores on the cognitive structure. The results offer some fundamental insights for developing more effective policies and promotion strategies.
User feelings of Tokyo's large railway terminals were gathered by means of a questionnaire. Overall impressions of the stations were then extracted using factor analysis. A structural equation model (SEM) was applied to see how stores affect the user's impressions of the stations as well as to quantify the impact of the stores and the differences in the users' socio-economic characteristics.
The results suggest that railway users have three types of impressions about stations: convenience, when a station is mainly considered a transport facility; pleasure, when a station is mainly considered a place of communication or leisure; and crowded, which concerns the station's layout and atmosphere. Different types of stores produced different impressions. Clothing stores enhanced the impression of pleasure, while food & beverage stores enhanced the impression of convenience. The revealed shopping behaviour data confirmed that these latent variables affect the railway user's choice of shopping destinations.

Driver's route choice behavior and its implications on network simulation and traffic assignment

Taka Morikawa, Shinya Kurauchi, Toshiyuki Yamamoto, Tomio Miwa and Kei Kobayashi

Simulation Approaches in Transportation Analysis: recent advances and challenges page： 341-369 2005

Language：English Publishing type：Research paper (scientific journal)

The principle of driver's route choice has long been the shortest path with a fixed time penalty of a toll. It is also seen that traffic is assigned on the road network based on user equilibrium with perfect information assumption. This paper demonstrates two empirical studies that pose a question to these traditional assumptions to better understand route choice behavior. Multi-class user equilibrium assignment with imperfectly informed drivers' classes is applied to a metropolitan area network first. Next, route choice behavior is directly observed and analyzed using probe car data.

Simulation analysis of a multiple-station shared vehicle system without vehicle redistribution Reviewed

Yamamoto, T., Nakayama, S. and Kitamura, R.

Journal of Infrastructure Planning and Management Vol. No. 786/IV-67 page： 11-20 2005

Authorship：Lead author Language：Japanese Publishing type：Research paper (scientific journal)

Without redistribution of vehicles by operator, a multiple-station shared vehicle system may not meet all the demand, because the vehicles in the fleet may be distributed unevenly across the stations due to the directionality in demand, making it impossible to accommodate demands with certain combinations of origin and destination stations. A simulation model is developed to investigate the effects on system performance of many factors including the number of stations, the number of vehicles, the parking capacity, the size of the demand, and the one way trip rate. System performance is represented by a set of measures including the number of trip served by the system and the total time the vehicle is in use. The results suggest that the performance of a system with 100 stations and that of 10 systems with 10 stations each are the same if the other conditions are the same, and that increasing the number of the parking stalls is more effective than increasing the number of stations.

Florida Activity Mobility Simulator: overview and preliminary validation results Reviewed

Ram M. Pendyala, Ryuichi Kitmaura, Akira Kikuchi, Toshiyuki Yamamoto and Satoshi Fujii

Transportation Research Record ( 1921 ) page： 123-130 2005

Language：English Publishing type：Research paper (scientific journal)

Inter-Temporal Comparison of Household Car and Motorcycle Ownership Models Considering Traffic Convenience in Residential Area – The Case of the Chukyo Metropolitan Area – Reviewed

Nobuhiro SANKO, Hiroaki MAESOBA, Toshiyuki YAMAMOTO and Takayuki MORIKAWA

Infrastructure Planning Review Vol. 22 page： 541-550 2005

Language：Japanese Publishing type：Research paper (scientific journal)

ousehold car and motorcycle ownership behaviours in the Chukyo Metropolitan Area have been analysed focusing on 1) traffic convenience in residential area, 2) interrelationships between car and motorcycle ownership, and 3) secular changes of the ownership behaviours. Some accessibility measures, based on expected maximum utility of mode choice models, are examined to explain the convenience and bivariate ordered probit models are applied to describe the ownership. Models estimated are inter-temporally compared, and their transferability is examined. Complementary relationships between car and motorcycle ownership, the secular changes of factors affecting the ownership, and accessibility measures related to higher transferability are shown.

“カーシェアリング”特集にあたって

山本俊行

土木学会論文集 Vol. 786/IV-67 page： 1-2 2005

P-DRGS and Eco-point TDM Project in the Second Stage at The Aichi Expo

Toshiyuki Yamamoto

Journal of International Association of Traffic and Safety Sciences Vol. 29 ( 1 ) page： 110-113 2005

Comparative analysis of time-space prism vertices for out-of-home activity engagement on working and non-working days Reviewed

Yamamoto, T., Kitamura, R. and Pendyala, R.M.

Environment and Planning Part B: Planning and Design Vol. 31 ( 2 ) page： 235-250 2004

An analysis on accuracy of reproduced route and speed by transmitted data at different frequency from probe vehicle

Liu, K. and Yamamoto, T.

Proceedings of Infrastructure Planning Vol. 30 2004

ITSによるデータ収集技術を活用した自動車共同利用システムの利用者行動分析 Reviewed

山本俊行，山本直輝，森川高行，北村隆一

土木計画学研究・論文集 Vol. 21 page： 571-579 2004

品目による相違と場所選択に着目した買い物行動の分析 Reviewed

李成，山本俊行，倉内慎也，森川高行

土木計画学研究・論文集 Vol. 21 page： 561-569 2004

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