基于信号控制的城市道路环形交叉口通行能力分析研究

Analyse Research on Signal Control Based on Traffic Capacity of Urban Road Annular Intersection

城市道路环形交叉口同一般平面交叉口相比,具有冲突点少、车流连续、行驶安全、便于管理等优点,在许多城市道路交叉口采用。然而,随着城市道路交通需求量的不断增加,原有许多环形交叉口的通行能力无法满足这种需求,交通问题日益尖锐。如何有效地利用环形交叉口的时空资源,最大限度提高交叉口通行能力,是从交通信号控制角度研究解决环形交叉口交通问题的有效途径。

Compared with ordinary plane intersection,the annular intersection has some advantages such as less conflict points,more continuous traffic flow,better safety and easier to control.So it has been implemented in many urban roads.However,with the rapid increase of urban road transport demand,the capacity of annular intersection is unable to meet the demand.This paper introduces an effective way to solve the problems based on signal control,which effectively uses the time and spatial resources of the annular intersections and maximizes the capacity.