基于交通仿真技术的公交优先预信号方案研究

基于交通仿真技术,对公交优先预信号交叉口进行研究,提出了预信号方案的改善设计以及仿真研究方法.采用TSIS仿真软件,针对预信号方案设计中主预信号相位差、公交候驶区长度的合理取值范围和设计计算方法展开研究,并比较了有、无预信号下交叉口的交通延误状况.示例研究表明,通过设置预信号,公交车平均延误减少,达到了公交优先通行的效果.在交通饱和情况下,预信号控制可以从整体上改善交叉口的运行状况,并能有效保障公交顺畅通行.

Study on Bus Priority Using Pre-signal Based on Traffic Simulation

Based on traffic simulation technique,bus priority of intersection using pre-signal was studied.Aiming at pre-signal design,an improved method was presented and computer simulation was carried out.An intersection was selected to identify the reasonable range and calculation model of the offset and the bus advance area length by means of Traffic Software Intergrated System(TSIS).Comparing the traffic delay at the intersection with and without pre-signal,the study has indicated that,by pre-signal control strategies,bus delay will be reduced and bus priority will be ensured.Pre-signal control design can improve the operation performances of the intersection as a whole,and also minimize bus delay under traffic saturation.