The invention relates to an anti-overflow control method for urban crossings. The method comprises the following steps: dividing a road into a plurality of small sections; calculating the running speed of the vehicle in each small section; setting a low-speed threshold value Vlow of each small section according to the road grade of the road where the small section is located; in two adjacent intersections in the traffic flow advancing direction, the intersection where the traffic flow enters is defined as an upstream intersection, the intersection where the traffic flow flows out is defined as a downstream intersection, and a plurality of small sections are selected for each upstream intersection to serve as early warning road sections; when the driving speed of the vehicle in the early warning road section of the upstream intersection is smaller than a low-speed threshold value Vlow, the traffic light and the traffic guidance device are utilized to evacuate the traffic flow overflowing from the upstream intersection; and when the driving speed of the vehicle in the early warning road section is not smaller than the corresponding threshold value, the traffic signal lamp and the traffic guidance device are recovered to be in the state before early warning. The traffic flow can be reasonably distributed, the traffic jam and jam time are reduced, the intersection passing efficiency is improved, and the traffic travel time is shortened.
本发明涉及一种城市道口防溢出控制方法。该方法包括:将道路分为若干小段;计算每个小段中车辆的行驶速度;根据小段所在道路的道路等级设定每个小段的低速阈值Vlow;定义沿车流前进方向的相邻两个路口中,车流进入的路口为上游路口,车流流出的路口为下游路口,为每个上游路口选取若干小段作为预警路段;当上游路口的预警路段中车辆的行驶速度小于低速阈值Vlow,利用交通信号灯和交通诱导装置,疏散上游路口溢出的交通流量;当预警路段中车辆的行驶速度不小于对应的阈值时,恢复交通信号灯和交通诱导装置为预警未发生前的状态。本发明可以合理分配交通流量,减少交通拥堵和堵塞时间,提高路口通行效率,缩短交通行程时间。
Urban crossing anti-overflow control method
一种城市道口防溢出控制方法
2023-10-10
Patent
Electronic Resource
Chinese
IPC: | G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS |
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