交通环岛优化模型设计及应用

在对环岛控制的理论分析基础上,以巴黎凯旋门交通环岛为例,提出一种全新的车辆环绕方式,将环岛内的车流有序化、规范化.将环岛优化策略与交通信号控制相结合,设计出主干道与次干道交通信号控制方案.主干道信号控制有效地避免了环岛因超负荷而堵塞以及车辆二次停车的情况,次干道信号控制有效地将岛内高峰车流与入岛车流相分离,从而实现了环岛的车辆通行能力最大化.

Design and Application of Optimization Model for Traffic Roundabout

Based on the theoretical analysis of control on traffic roundabout, taking the round- about of Paris＇s Are de Triomphe as a major research object, a fresh circular pattern for the vehicles is devised for the purpose of ordering and standardizing the traffic. The model introduces traffic signal system into the roundabout optimization strategy, including signal control for major trunk roads and sub trunk roads. The signal control for major trunk roads efficiently avoids the traffic jam caused by overload and secondary parking, meanwhile the signal control for sub trunk roads separates the peak traffic in roundabout and entering traffic, so that the traffic capacity of roundabout is optimized.