信控交叉口不同左转车道设置位置对交通安全的影响

城市道路信号干扰控制交叉口右侧处于与左转横向交通道路产生的信号冲突点最多,对车辆直行道和车流双向通行的信号干扰最大,使得城市平面道路交叉口左转交通信号延误程度增大。左转专用车道的交通设置使用方式主要分为两种:内置左转车道与外置左转车道。不同方向车道灯的布置及其形式对车辆左转方向交通的通行影响很大程度也会有所很大不同。本文通过实地调查,选取典型地区和交通重要路口情况进行模拟仿真实验分析,从转弯运行能力和通行能力的角度出发,探讨交叉口处不同左转车道的布置形式在不同交通特性下对整个交叉口的影响,从而明确其适用范围,为我国城市道路交通安全的发展提供参考。

Study on the Influence of the Location of Left Turn Lane on Traffic Safety at Different Signalized Intersections

The signal interference points generated by the right side of the urban road signal interference control intersection and the left-turn horizontal traffic road are the most,and the signal interference to the two-way traffic of the vehicle straight road and the traffic flow is the largest,which makes the left-turn traffic signal delay of the urban plane road intersection increase.The traffic setting mode of the left-turning dedicated lane is mainly divided into three types:a conventional single left turn dedicated lane,a double left turn special bicycle lane,an external double left turn dedicated lane,and an outermost double left turn dedicated lane.The arrangement of the lane lights in different directions and their forms will have a great influence on the traffic of the vehicle in the left turn direction.Through field investigation,this paper selects typical areas and important intersections of traffic to carry out simulation and simulation analysis.From the perspective of turning operation capacity and traffic capacity,the layout of different left-turn lanes at intersections is discussed under different traffic characteristics for the entire intersection.The impact,so as to clarify its scope of application,provide a reference for the development of urban road traffic safety in China.