Journal of Transportation Systems Engineering and Information Technology ›› 2018, Vol. 18 ›› Issue (4): 69-75.

• Intelligent Transportation System and Information Technology • Previous Articles     Next Articles

Multi-approach Collaborative Release Method of the Signalized Four-leg Roundabout

MA Xin-lu, YANG Xing-qing   

  1. Transportation College, Chongqing Jiaotong University, Chongqing 400074, China
  • Received:2018-04-10 Revised:2018-06-01 Online:2018-08-25 Published:2018-08-27

信号控制四路环形交叉口多进口协同放行方法

马新露*,杨兴清   

  1. 重庆交通大学 交通运输学院,重庆 400074
  • 作者简介:马新露(1981-),男,重庆万州人,副教授,博士.
  • 基金资助:

    国家自然科学基金/National Natural Science Foundation of China(61403052, 61703064);重庆市基础与前沿研究计划/Chongqing Basic and Frontier Research Project(cstc2016jcyjA0576).

Abstract:

For the problem of intersection delay caused by mutual interference between circulating vehicles of the signalized four-leg roundabout, the paper proposes a signal control method for multi- approach collaborative release. Firstly, a dynamic model is established based on a cell transmission model, which uses to describe traffic flow characteristics of the signalized four-leg roundabout. Then, a signal optimization model is established with intersection delay as the optimization goal and timing parameters as target variables, and the signal timing parameters are obtained through optimization with the genetic algorithm. Finally, the applicability of the model is analyzed by cases. The results show that vehicle delay of circulating lane was improved obviously after channelization of the left-turn and straight lane of the four-leg roundabout. Compared with the single-approachentering operation, the proposed multi-approach collaborative release control method can effectively relieve the vehicle delay of intersections.

Key words: urban traffic, multi-approach collaborative release, CTM, signalized roundabouts, delay

摘要:

针对传统信号控制四路环形交叉口环内车辆间相互干扰对交叉口延误的影响,本文提出 1种多进口协同放行的信号控制方法.首先,基于元胞传输模型建立能描述信号控制四路环形交叉口车流特征的动力学模型;并在此基础之上,以交叉口延误为优化目标、配时参数为目标变量建立信号优化模型,利用遗传算法进行优化,从而得到信号配时参数;最后,通过实例对模型的适用性进行分析.结果表明:四路环形交叉口进口道左直车道分流渠化后,环道车辆延误明显降低;与单进口轮流放行方式相比,本文提出的多进口协同放行控制方法能有效降低交叉口车辆延误.

关键词: 城市交通, 多进口协同放行, 元胞传输模型, 信号控制环形交叉口, 延误

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