智能交通灯的调度算法研究

Research on Scheduling Algorithm of Intelligent Traffic Light

由于交通信号是保证道路十字路口安全驾驶的重要交通工具。各个交通流存在队列延迟破坏并降低了交通顺畅性,提出了一种智能的交通灯调度算法。该算法分析通行十字路口的各交通流的实时交通特征,同时又对各个交通灯的时相进行调度。通过减少信号十字路口的通行车辆的等待时间改善了交通顺畅,并且提升每秒穿过十字路口的车辆数。该算法的性能并与其它算法进行不同模拟场景的对比实验。实验表明,该算法可缩短队列延时,明显提高了交通灯信号调度方案的交通流畅性,而且提高了每个信号十字路口的通行量。

The traffic signal is essential to guarantee safe driving at road intersection. Queuing delay of traffic flow damages and reduces the smooth smoothness ness of traffic flow. This paper proposed a scheduling algorithm of intelligent traffic light con- trol （TLSA）. First, it analyzed the real-time traffic characteristics of the traffic flow in an intersection, and the each traffic light time was scheduled. Secondly, in the intersection the traffic flow becomes easy and smooth by reducing waiting time of ve- hicles, hence, the crossing number of vehicles increases in every second. Finally, we compare TLSA to previous algorithms in this field by simulating different scenarios. Experiments show that this algorithm can not only shorten the queuing delay and improve the traffic flow signal scheduling, but also improve the traffic capacity of each signal intersection.