基于公交乘客可靠度的信号配时优化研究

为优化交叉口车流运行状态，本文引入公交乘客可靠度指标用于评估公交乘客通过交叉口的可靠性，分析了信号周期时长、公交车比例与公交乘客可靠度之间的关系，并研究了非公交优先方向流量对公交乘客可靠度的影响。结果表明：提高公交优先方向的公交乘客可靠度会使信号周期时长增加，并且随着公交优先方向的公交车比例增加，交叉口信号周期长度也随之增长。最后通过与Webster信号配时方案的对比，通过仿真验证了所提出的模型具有一定的效果，可为城市交通提供不同信号配时方法。

Research on signal timing optimization based on bus passenger reliability

In order to optimize the operation status of traffic flow at intersections, this paper introduces the reliability index of bus passengers to evaluate the reliability of bus passengers passing through the intersection, and analyzes the relationship between the signal cycle time, the proportion of buses, and the reliability of bus passengers, and study the impact of traffic in non-transit priority directions on the reliability of public transit passengers. The results show that improving the reliability of bus passengers in the bus priority direction will increase the signal cycle length, and as the proportion of buses in the bus priority direction increases, the signal cycle length of the intersection also increases. Finally, by comparing with the Webster signal timing scheme, simulations verify that the proposed model has a certain effect and can provide different signal timing methods for urban traffic.