吉林大学学报(工学版) ›› 2015, Vol. 45 ›› Issue (3): 748-754.doi: 10.13229/j.cnki.jdxbgxb201503010

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Oversaturated intersection traffic signal control method considering bus priority

MA Xu-hui1, LIU Xiao-ming2, ZHANG Jin-jin2   

  1. 1.School of Traffic and Transportation, Beijing Jiaotong University, Beijing 100044, China;
    2.Beijing Key Lab of Urban Traffic Control, North China University of China, Beijing 100144, China
  • Received:2013-09-02 Online:2015-05-01 Published:2015-05-01

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Abstract: With the objective of improving the capacity and avoiding overflow for oversaturated intersections meanwhile considering bus priority, a method is proposed to determine the queue length threshold, detect the threshold and estimate the queue length. Then according to the traffic flow conflict and section space constraints, a method of dynamic phase combination is designed. From the traffic flow characteristic of oversaturated intersections the key parameters are defined, in which the weight of bus priority is considered. On the basis of the above work, the control method for oversaturated intersections is studied with gather-disperse theory and fuzzy control. Finally, an interconnected control method of traffic signals for oversaturated intersection is put forward. Simulation results show that the new method can not only restrain the overflow in oversaturated intersection, but also improve the average traffic flow and effectively reduce the average delay time at intersections.

Key words: engineering of communication and transportation system, oversaturated intersections, bus priority, dynamic phase combination, gather-disperse theory, fuzzy control

CLC Number: 

  • U491.3
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