Urban Multimodal Traffic Assignment Model Based on Travel Demand

Abstract

The structural characteristic of urban multimodal transport system was fully analyzed and then based on graph theory,a hierarchical network was proposed to describe the system.Simultaneously,the complex travelers' choice behaviors including traffic mode choice and route choice were analyzed in hierarchical network and based on the analysis of travel demand,the generalized cost functions and the link impedance functions were formulated while mutual interferences of vehicle flow with different modes were considered.Based on it,a variational inequality model of equilibrium assignment for urban multimodal traffic network was proposed.The solution algorithm was also presented.Finally,a numerical example was used to illustrate the validity of model and algorithm.Results show that the proposed model and algorithm are effective.

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