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Discrete Dynamics in Nature and Society
Volume 2013 (2013), Article ID 165086, 7 pages
Research Article

Dynamic Analysis of Traffic State and Congestion Propagation on Bidirectional Grid Network

1Public Security Department, Shandong Police College, Jinan 250014, China
2School of Architecture and Urban Planning, Shandong Jianzhu University, Jinan 250101, China
3MOE Key Laboratory for Urban Transportation Complex Systems Theory and Technology, Beijing Jiaotong University, Beijing 100044, China

Received 12 July 2013; Revised 22 October 2013; Accepted 29 October 2013

Academic Editor: Wuhong Wang

Copyright © 2013 Shu-bin Li et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Many traffic problems in China such as traffic jams and air pollutions are mainly caused by the increasing traffic volume. In order to alleviate the traffic congestion and improve the network performance, the analysis of traffic state and congestion propagation has attracted a great interest. In this paper, an improved mesoscopic traffic flow model is proposed to capture the speed-density relationship on segments, the length of queue, the flow on links, and so forth, The self-developed dynamic traffic simulation software (DynaCHINA) is used to reproduce the traffic congestion and propagation in a bidirectional grid network for different demand levels. The simulation results show that the proposed model and method are capable of capturing the real traffic states. Hence, our results can provide decision supports for the urban traffic management and planning.