交通运输系统工程与信息

交通运输系统工程与信息 ›› 2015, Vol. 15 ›› Issue (2): 68-75.

• 智能交通系统与信息技术 • 上一篇    下一篇

信号交叉口控制相位的流线动态优化组合方法

刘伟*，肖文彬，王奥博   

  1. 重庆交通大学交通运输学院，重庆400074
  • 收稿日期:2014-10-31 修回日期:2015-01-04 出版日期:2015-04-25 发布日期:2015-04-27
  • 作者简介:刘伟(1978-)，男，重庆人，副教授，博士.
  • 基金资助:

    重庆市科委软科学重点项目（CSTC2011CX-RKXB0023）.

Optimization-based Methods for Dynamic Schemes of Movement in Control Phases at Signalized Intersections

LIUWei，XIAOWen-bin，WANG Ao-bo   

  1. School of Transport，Chongqing Jiaotong University，Chongqing 400074，China
  • Received:2014-10-31 Revised:2015-01-04 Online:2015-04-25 Published:2015-04-27

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摘要：

在现有城市交叉口单点定时及感应信号控制方式中，相位交通流线不能动态组合，在交叉口各流向车辆到达波动较大的情况下，部分流向将产生绿灯损失.为了减少车流到达波动较大交叉口的通行时间损失，提出一种新的相位流线动态组合控制策略.通过引入交通流线相容性概念，将交通流线向量化并进行向量计算寻找相容交通流线.采用流线的逻辑运算确定可行相位组合，以相位绿灯损失最小为原则，得到周期最优控制相位流线组合.该方法能适应交叉口进口流线车辆到达随机波动较大的状态下，实时生成控制相位的流线组合，减少交叉口延误，提高通行效率.

关键词: 交通工程, 交叉口动态控制, 交通流线相容性, 流线动态组合, 相位绿灯损失

Abstract:

Focusing on the situation that green time lose present at pre- timed or sensing control urban signalized intersections with obviously fluctuated vehicle arrival rates in movements because of lack of dynamic traffic schemes in phases. For minimize the loss of passing time, a new control method based on dynamic schemes of movements in phases is proposed in this paper. It steam from the concept of compatible traffic movements and we calculate the possible schemes of compatible movements by vector calculus. To take keeping the loss time of green phase minimal as the goal, the optimization control method of dynamic schemes of movements in phases is obtained by analyzing. The control schemes of movements in phases obtained by the methods can accommodated timely to the intersections which have stochastic and fluctuated vehicle arrival rates and it can also minimize the delay time and improve passing efficiency.

Key words: traffic engineering, dynamic control for intersections, compatible traffic movements, dynamic schemes of movements, green time loss in phases

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