Date: 14 Apr 2011

Urban transit assignment model based on augmented network with in-vehicle congestion and transfer congestion

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This paper presents an augmented network model to represent urban transit system. Through such network model, the urban transit assignment problem can be easily modeled like a generalized traffic network. Simultaneously, the feasible route in such augmented transit network is then defined in accordance with the passengers’ behaviors. The passengers’ travel costs including walking time, waiting time, in-vehicle time and transfer time are formulated while the congestions at stations and the congestions in transit vehicles are all taken into account. On the base of these, an equilibrium model for urban transit assignment problem is presented and an improved shortest path method based algorithm is also proposed to solve it. Finally, a numerical example is provided to illustrate our approach.

This work is supported by the National Natural Science Foundation of China (71071016, 70901005), the Fundamental Research Funds for the Central Universities (2009JBM040, 2009JBZ012) and the Foundation of State Key Laboratory of Rail Traffic Control and Safety (RCS2010ZT001).
Bingfeng Si is currently an associate professor of Beijing Jiaotong University. He received his PhD in 2001 from School of Traffic and transportation, Beijing Jiaotong University. He has visited and worked at the Hong Kong Polytechnic University, University of Southampton, and other institutions. His areas of research interests include assignment model of urban traffic network, flow analysis for multimodal traffic network and transportation planning and management.
Ming Zhong is an associate professor of Civil Engineering in University of New Brunswick. He is professional engineer of the Association of Professional Engineers and Geoscientists of New Brunswick, associate member of Institute of Transportation Engineers (ITE) and member of Canadian Society of Civil Engineering (CSCE). His areas of research interests include land use and transportation interaction modeling, travel behavior analysis and travel demand forecasting, traffic data programs/data mining applications in traffic engineering, and so on.
Xiaobao Yang is currently a lecturer of Beijing Jiaotong University. He received his PhD in 2007 from School of Economics and Management, Beihang University (BUAA). His areas of research interests include transportation planning and management, mixed traffic flow model, and system science.
Ziyou Gao is currently a full professor of Beijing Jiaotong University, director of the Institute of System Science. He received his PhD in 1994 from the Institute of Applied Mathematics, Chinese Academy of Sciences. He has been on the editorial board of Transportmetrica and Journal of Transportation Systems Engineering and Information. His areas of research interests include complex of transportation system, network flow analysis and optimization, and system science.