Shandong Science ›› 2022, Vol. 35 ›› Issue (2): 106-114.doi: 10.3976/j.issn.1002-4026.2022.02.013

• Traffic and Transportation • Previous Articles     Next Articles

Coordinated control of urban expressway off-ramp and adjacent intersection

LIU Zheng(),LIU Su-fang,LI Xin-gang()   

  1. MOE Key Laboratory for Urban Transportation Complex Systems Theory and Technology, Beijing Jiaotong University, Beijing 100044, China
  • Received:2021-04-09 Online:2022-04-20 Published:2022-04-07
  • Contact: Xin-gang LI E-mail:liuzheng@bjtu.edu.cn;lixingang@bjtu.edu.cn

Abstract:

Urban traffic travel demand is dynamic, and there is a strong correlation between the off-ramp of an urban expressway and its downstream adjacent intersection. When the capacity of the intersection is low and the distance between the off-ramp and adjacent intersection is not set reasonably, queues at the intersection can easily propagate to the upstream off-ramp and affect expressway traffic flow.In this paper, the coordinated signal control of the off-ramp and adjacent intersection of urban expressway is studied under different traffic demand, distances between off-ramp and adjacent intersection using parallel microscopic traffic simulation software Paramics. And the effects of both signal control and phase offsets of the off-ramp on traffic volumes and travel time are analyzed.Simulation results show that the coordinated signal control of the off-ramp and adjacent intersection can improve traffic volumes and reduce travel time.

Key words: urban traffic, coordinated control, phase offset, off-ramp, intersection

CLC Number: 

  • U491.2