冰雪天气下交叉口信号配时优化方法  

Optimization methods of intersection signal timing parameters under ice and snow condition

作　　者：林赐云[1] 谢天承 覃蔚 郭旭 李正浩 郑臻 LIN Ci-yun;XIE Tian-cheng;QIN Wei;GUO Xu;LI Zheng-hao;ZHENG Zhen(College of Transportation,Jilin University,Changchun 130022,China)

机构地区：[1]吉林大学交通学院,长春130022

出　　处：《吉林大学学报（工学版）》2022年第10期2316-2324,共9页Journal of Jilin University:Engineering and Technology Edition

基　　金：国家自然科学基金项目(51408257).

摘　　要：针对冰雪天气现有配时方案信号控制效益下降导致的交通拥堵问题,从冰雪天气的交通流运行特征入手,分析了在不同降雪量下的交通流参数变化情况。运用多元非线性回归,对现有的韦氏延误计算公式进行修正,采用Vissim软件建立了长春市解放大路与人民大街交叉口晴天与雪天的交通信号控制仿真模型,并进行了案例分析。分析表明:根据降雪量调整的信号配时方案,与仍采用正常天气情况下的信号配时方案相比,能有效降低交叉口处车辆的平均延误,提高交叉口的通行效率。本文分析结果适用于所有冰雪天气环境下的交通信号优化控制。In the case of ice and snow weather,the signal control efficiency of the existing signal scheme is substantially reducing,which further leads to the traffic congestion.So starting from the operation characteristics of traffic flow,we analyzed the variation of traffic flow parameters under different snowfall amounts.Using regression fitting,the existing Merriam-Webster delay calculation formula is corrected.Taking the intersection of Jiefang Avenue and Renmin Avenue in Changchun City as an example,Vissim software is used for simulation analysis.The results show that in the ice and snow weather,compared with the signal timing scheme under normal weather conditions,adjusting the signal timing scheme according to the snowfall can effectively reduce the average delay of vehicles at the intersection and improve the traffic efficiency of the intersection.These analysis results are also suitable for the optimal control of traffic signals in all snow and ice weather environments.

关 键 词：交通运输系统工程 信号交叉口 配时优化 冰雪条件 交通仿真 

分 类 号：U491.5[交通运输工程—交通运输规划与管理]