基于预信号控制的交叉口车辆延误分析

Analysis of Vehicle Delay at Intersections Based on Pre-signal

为定量分析面向社会机动车流的预信号控制方法对车辆延误的影响,首先介绍了预信号控制的进口道渠化布局方式,对不同车道渠化条件下的预信号控制方法进行研究,然后分析了车辆在不同车道渠化方式下的主、预信号处的到达与离开过程,在此基础上,对车辆的延误计算方法进行研究。最后将本文的延误计算方法运用到实例分析中,结果表明相较于常规无预信号的控制方法,实例进口在现状流量条件下,预信号的控制方法能够使车均延误有效降低。进一步改变交通量,发现随着流量的增加,预信号控制方法对延误改善效果越明显。

In order to quantitatively analyze the influence of vehicles delay at the intersections with pre-signals for social vehicles,a vehicle delay calculation method with pre-signal is proposed.First,the distribution and signal control method of intersection entrances under different lanes canalization situation is introduced.Then the calculation methods of vehicles delay at the intersections with pre-signal are studied on the basis of vehicles arrival and departure processes analysis at main-signal and pre-signal.Finally,the proposed delay calculation method is applied to practice analysis.It shows that the pre-signal control method reduces average delay effectively compared with traditional method without pre-signal under current traffic demands.It is also demonstrated that the effectiveness to reduce intersection delay is more obvious as the traffic demands increasing.