In the system, bus priority intelligent signal controller considers bus PRI and flow quantity of all vehicles synthetically, calculates the eager degree of the red phase and the change degree of the green phase.

• 在系统中,公交优先智能信号控制器通过综合考虑公交车优先级和所有车辆的流量,计算出红灯相位的急切度和绿灯相位的转换度;