The invention discloses a single-point signal timing optimization method driven by congestion alarm. The method comprises the following steps of using a signal period as a sampling frequency; obtaining the saturation of each flow direction of any intersection L, the average speed of each entrance road section entering the intersection L from each intersection adjacent to the intersection L and thecorresponding highest speed limit; calculating the traffic state intensity of each flow direction of the intersection L, and comparing the traffic state intensity of any flow direction m of the intersection L with the corresponding traffic state intensity threshold; triggering a congestion alarm signal of the flow direction m of the intersection L when the flow direction traffic state intensity of the flow direction m is greater than a traffic state intensity threshold in three continuous sampling periods. The method has the characteristics that a single-point signal timing optimization feedback mechanism driven by congestion alarm is established, and a signal timing scheme is adjusted in a targeted manner according to the refined flow direction level congestion alarm information.
本发明公开了一种拥堵报警驱动的单点信号配时优化方法,包括如下步骤:以信号周期为采样频率,获取任意的路口L的各个流向的饱和度和从与路口L相邻的各个路口进入路口L的各个进口路段的平均速度及对应的最高限速,计算得到路口L的各个流向的交通状态强度,将路口L的任意的流向m的交通状态强度与其对应的交通状态强度阈值比较;当连续在3个采样周期中,流向m的流向交通状态强度>交通状态强度阈值时,触发路口L的流向m的拥堵报警信号;本发明具有建立了拥堵报警驱动的单点信号配时优化的反馈机制,根据精细化的流向级拥堵报警信息针对性调整信号配时方案的特点。
Single-point signal timing optimization method driven by congestion alarm
拥堵报警驱动的单点信号配时优化方法
2020-06-12
Patent
Electronic Resource
Chinese
IPC: | G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS |
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