渠化可变导向车道交叉口预设信号配时优化模型  

Optimization model for pretimed signals at an intersection with reversible approach lanes

作　　者：李丽丽[1] 姚荣涵[2] 周红媚[2] 王鹏飞[2] 

机构地区：[1]交通运输部管理干部学院现代交通运输发展研究中心,北京101601 [2]大连理工大学交通运输学院,辽宁大连116024

出　　处：《吉林大学学报（工学版）》2015年第1期75-81,共7页Journal of Jilin University:Engineering and Technology Edition

基　　金：交通运输部应用基础研究项目(2013319226070);同济大学道路与交通工程教育部重点实验室开放基金项目(K201206)

摘　　要：为了充分利用渠化可变导向车道交叉口的时空资源,建立了以交叉口车辆总延误最小为优化目标、以可变导向车道功能和相位有效绿灯时间为决策变量的预设信号配时优化模型。使用交通仿真软件VISSIM对本文模型进行了模拟验证。结果表明,可变导向车道功能和相位有效绿灯时间存在最佳组合,这种组合能使各股车流的车均延误最小、各进口道的平均排队长度和最大排队长度最短。为了进一步考虑多时段信号控制问题,提出了渠化可变导向车道交叉口多时段预设信号配时设计流程。研究成果能够合理地设定信号交叉口任一时段可变导向车道功能与信号配时方案,可以有效地提高交通流运行效率,为可变导向车道控制提供理论依据与方法。To fully utilize the time-space resources of an intersection with reversible approach lanes, an optimization model was developed for pretimed signals. The objective of this model is to minimize the total delay for all vehicles. The decision variables are the function of each reversible approach lane and the effective green time per signal phase. This model was validated by a case using the traffic simulation software VISSIM. The results indicate that there is an optimal combination of the two variables by which the average delay per vehicle for each movement, the average queue length and the maximum queue length on each approach can be minimized. To further consider the multi-period signal control, the procedure of the multi-period pretimed signal timing design for an intersection with reversible approach lanes was proposed. The research achievement can reasonably allocate the function of each reversible approach lane and the signal timing scheme during any time period for a signalized intersection, effectively improving the operation efficiency of traffic flow and providing a theoretical basis and method for the control of reversible approach lanes.

关 键 词：交通运输系统工程 可变导向车道 预设信号 信号配时 优化模型 

分 类 号：U491[交通运输工程—交通运输规划与管理]