基于VISSIM的城市主干道双向绿波交通仿真与评价

Simulation and evaluation of urban arterial road bidirectional green wave traffic based on VISSIM

绿波交通是缓解城市主干道交通拥堵的重要措施之一.利用微观仿真软件VISSIM对城市主干道双向绿波交通实施效果进行了评价.仿真结果表明:在特定的流量下,相对于单点控制,绿波交通能有效减少主干道延误,但有可能会增加部分相交道路的延误.另外,车辆速度和相位差均对绿波交通实施效果有显著影响,主干道车均延误随着车辆速度和相位差的增加呈现"U"字型的特征.利用VISSIM仿真系统能够找到最佳的绿波速度和相位差,使绿波交通的实施效果达到最优化.

Green wave traffic had been one of the important measures to alleviate congestion of urban arterial ,roads. It was evaluated the implementation effect of urban arterial road bidirectional green wave traffic based on the microscopic simulation software VISSIM. The simulation results showed that the green wave traffic could reduce delay of arterial road relative to single point control under specific traffic flow, but the delay of partial intersecting road might increase. In addition, speed of vehicle and signal offset both would have significant effect on the implementation effect of green wave traffic. Along with the increase of speed and signal offset, the average delay presented a ＂U＂ type. Using VISSIM, it could find out the best green wave speed and signal offset, and maximize the effect of the green wave.