信号灯多重调控下公交系统优化研究

Research on control optimization of bus system by multiple regulation of signal light

为保证公交车有序到达公交站点,减少乘客的等待成本及公交车运营成本,本文提出多重调控的有限公交优先信号控制方法。借助车辆感应器检测公交车行驶速度和路况信息,预测该公交车与第一辆公交车通过交叉口的时间间隔,并计算该时间间隔与两车期望时间间隔之间的偏差;结合信号灯显示状态采用多重信号调控手段,建立交叉口信号配时优化模型以减小偏差。该信号控制策略能优化公交车的车头时距,提高公交车的运行效率。

In order to ensure bus to arrive at bus stations in order and to reduce passengers' waiting costs and bus operating costs,this paper proposes a multi-regulated limited single priority control method.With the help of vehicle detectors which detects the speed of buses and road condition information,the time interval between buses when passing the intersection is predicted.The deviation of true time interval and the expected time interval between the two vehicles is calculated.Combined with the signal display status,the multiple signal control methods is adopted and an optimization model of intersection signal timing is established to reduce this deviation.The simulation results show that the signal control strategy proposed in this paper can optimize the headway of buses and improve the operating efficiency of buses.