两相位交叉路口最小信号周期时长  

Minimum cycle length of two-phase road intersection

作　　者：马东方[1] 王殿海[1] 陈永恒[1] 郭伟伟[1] 

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）》2011年第2期338-342,共5页Journal of Jilin University:Engineering and Technology Edition

基　　金：国家自然科学基金项目(50908100;70971053);'十一五'国家科技支撑计划重点项目(2006BAJ18B07);吉林大学自然科学基本科研业务项目(200903214)

摘　　要：为从交通效率的角度出发寻求两相位等权交叉口最小信号周期时长,以概率论和排队论为基础,引入饱和释放损失时间,对经典的车队法模型进行改进,给出了车均延误模型。通过对比信号设置前后交叉口车均延误大小,取延误较小者为最优控制方式,得到了交叉口信号设置的临界流量条件。以此为基础,考虑最小绿灯时间等安全因素的限制,针对常见的3种无信号交叉方式提出了改用两相位控制后的交叉口最小信号周期时长。Based on the probability theory and the queuing theory introducing a concept of lost time of saturated releasing, the classical model of motorcade analysis was improved, and a model of vehicle average delay was proposed to seek the minimum signal cycle duration of the 2-phase equal-weight road intersection from the angle of traffic efficiency. By comparing the average vehicle delay under non-signalized road intersection with that of the signalized one, choosing the control with less delay as the optimal control, the critical traffic flow for setting the signal at road intersection was obtained, Based on this and considering the restriction of the minimum green time, the minimum signal cycle duration was achieved after adopting the 2-phase signal control for 3 common control patterns without signal overlapping.

关 键 词：交通运输工程 最小信号周期时长 车队法 延误 临界交通流量 

分 类 号：U491[交通运输工程—交通运输规划与管理]