城市干线道路交通信号协调优化控制关键问题研究与实践  

The study and practice on key problems of traffic signal coordination and optimization control of urban arterial road

作　　者：李亚军[1] LI Yajun(Gansu Police Vocational College,Lanzhou730046,China)

机构地区：[1]甘肃警察职业学院,中国兰州730046

出　　处：《汽车与安全》2020年第9期102-109,共8页Auto & Safety

基　　金：2019年甘肃省高等学校创新能力提升项目,编号:2019B-248,项目名称:“互联网+”背景下公安智慧交通管理与警务创新发展研究。

摘　　要：城市干线道路作为城市路网的重要组成部分,其通畅与否直接影响整个城市路网运行的效率。传统城市道路干线交通信号协同控制方法注重交通运行个体研究,没有细致考虑干线交叉口信号协调优化控制的核心关键,由于城市道路交通需求在空间上存在分布不均匀、干线道路相邻交叉口间车流行驶速度具有随机波动的特性,因此干线交通信号协调优化没有达到理想的实践效果。通过研究城市干线交通流运行过程,利用红绿灯数学建模对城市干线交通流运行状态与实际情况进行合理拟合,系统分析干线行驶车辆在干线各交叉口延误情况的内在规律,提出了城市道路干线交通信号协调优化控制的关键问题,这对改善城市交通拥挤状况、提高公安交通管理部门的城市交通管理和服务能力具有重要的学术意义和实践价值。Urban trunk road as an important part of urban road network,its smooth or not directly affect the efficiency of the entire city road network operation.The traditional urban road trunk road traffic signal coordination control method pays great attention to the individual research of traffic operation,and does not consider the core key of signal coordination and optimization control of trunk intersection.Because of the uneven distribution of urban road traffic demand and the random fluctuation of traffic flow speed in the intersections of trunk roads,the coordination and optimization of trunk traffic signals has not achieved the desired effect.This paper studies the running process of urban trunk traffic flow and uses traffic lights mathematical modeling to reasonably simulate the running status and actual situation of urban trunk traffic flow.By analyzing the main vehicle in the inner mechanism of the trunk line each intersection delay case,puts forward the main city road traffic signal coordination control of key problem.This has the positive practical significance to the improvement urban traffic crowds condition,enhances the main line road service ability.

关 键 词：城市主干道 交通信号 协调控制 红绿灯模型 

分 类 号：U491.54[交通运输工程—交通运输规划与管理]