左弯待转区交通信号控制方法的研究

Traffic signal control methods in left-turn waiting areas

在左转车流量较多且路口区域较大的交叉口,一般通过设置左待转区提高交叉口的通行能力,但待转区的设置会引起机动车的二次停车,造成通行效率低、油耗增加、污染加重。本文主要研究左转车进入待转区的时间,使首辆机动车自驶入待转区到驶出该区域能够实现连续、无二次停车,减少交叉口延误及其带来的污染排放。通过在VISSIM仿真验证,表明无论在高峰、平峰还是低峰,本文所提出的方法都是可行有效的,为改善交通信号配时提供一种新的思路。

The intersection capacity is generally improved by setting left-turn waiting areas if there are more left-turn traffic flows and the intersection area is large.But setting left-turn waiting areas will also cause vehicles' secondary parking,which will result in increasing fuel consumptions and pollution emissions.In this paper,the proposed method used mathematical algorithm to accurately calculate the time of left-turn vehicles through the waiting area.Ultimately it make the left-turn vehicles through the left-turn waiting areas continuously and with no secondary parking and reduce intersection delay and pollution emissions.Through experimental verification on VISSIM shows no matter in peak,flat peak or off-peak,the proposed method is feasible and effective and provides a new probe to improve traffic signal timing.3tabs,4figs,11 refs.