信号控制交叉口行人与左转车流冲突的解决思路

Solutions to the Conflict Between Pedestrians and Left-Turning Vehicles at Signalized Intersections

信号控制交叉口行人与左转车流的冲突问题普遍存在,探索行人与左转车流冲突的解决思路有助于提升行人过街体验。通过深圳市一个典型交叉口案例,讨论行人与左转车流的冲突成因,并形成两个优化方案。在此基础上,将行人与左转车流的冲突情形分为三种:同时放行的行人与左转车流、行人与绿灯末尚未通过交叉口的左转车流、绿灯末进入斑马线的行人与左转车流。针对这三种冲突情形,分别提出早启机动车相位、拆分相位、使用行人专用相位、增设行人过街安全岛、采用禁左控制策略,延迟行人绿灯启亮时间、合理压缩交叉口面积,更改行人清空灯色方案、采用感应式行人过街信号控制等解决思路。

he conflicts between pedestrians and left-turning traffic flow is widespread at signalized intersections.Exploring solutions to these conflicts contributes to the improvement of the pedestrian crossing experience.Taking a typical intersection in Shenzhen as an example,this paper discusses the causes of these conflicts and develops two optimization schemes.On this basis,the conflicts between pedestrian and leftturning traffic flow are divided into three types:pedestrians and left-turning traffic flow that are released simultaneously,pedestrians and left-turning traffic flow that has not yet traveled through the intersections at the end of the green light,and pedestrians entering the zebra at the end of the green light and left-turning traffic flow.Given these three situations,the paper proposes the following solutions respectively:(1)early start the motor vehicle phases,split phases,use the dedicated pedestrian phase,add pedestrian crossing safety island,and adopt left prohibition control strategy;(2)delay the pedestrian green light and reduce the area of intersections reasonably;(3)change the plan of pedestrian clearing light color,and adopt the inductive pedestrian crossing signal control.