面向公交准点与绿波通行的干线信号协调设计

Signal Coordination Design of Arterial Road for Bus Punctuality and Green Wave Travel

摘要:

以保障公交准点率和提升通行效率为控制目标，给出了一种公交干线双向红绿波协调设计方法。通过定义准点控制交叉口和绿波通行交叉口，根据公交车站的位置分布情况，确定上游信号交叉口的红波或绿波控制模式；通过等价变换协调设计速度，建立公交红绿波轨迹特征方程，推导交叉口理想间距计算通式，计算交叉口中心偏移率，实现了干道公交信号协调控制方案优化，为兼顾公交准点与绿波通行的干线信号协调设计提供了一种数解算法，也为公交到站时刻表的制定提供了优化依据。案例实验表明，设计方案可以保证97.6%的公交车辆在预定信号周期内到达公交车站，公交车辆实际到站时间与计划到站时间的平均偏差为5.5 s；公交车辆在绿波通行交叉口的平均停车次数为0.06次，平均延误时间为2.97 s。

Abstract:

A bidirectional red and green waves coordination design method for bus arterial road was proposed to ensure punctuality and improve operation efficiency. By defining punctual control intersection and green wave intersection， the red wave or green wave control mode of upstream signalized intersections was determined based on the distribution of bus stop positions. By applying equivalent transformations to the coordination design speed and establishing the characteristic equation for the bus red and green wave trajectory， the general formula for calculating the ideal distance between intersections was derived. This included calculating the offset rate of intersection centers and an algebraic method was provided to optimize the coordination control scheme of arterial road for bus signals， aiming to balance bus punctuality with green wave travel. Additionally， an optimization method was provided for developing bus arrival timetables. The case experiment shows that the design scheme of this method can ensure that 97.6% of buses arrive at the bus station within the predetermined signal cycle， and the average deviation between the actual arrival time and the planned arrival time of buses is 5.5 s， and the average number of stops for buses at green wave intersections is 0.06 with an average delay time of 2.97 s.