The invention provides a road network average queuing length calculation method based on a three-dimensional macroscopic fundamental diagram, and the method specifically comprises the following steps: constructing a road network level traffic simulation model, drawing the three-dimensional macroscopic fundamental diagram according to a simulation operation result, carrying out the function fitting of the obtained three-dimensional macroscopic fundamental diagram, obtaining a dynamic vehicle conversion coefficient through combining with a three-phase traffic flow theory, and calculating the average queuing length of a road network. According to the three-phase traffic flow theory, the road network average speed is calculated based on the traffic flow, the vehicle density and the vehicle speed, and on the premise that the road network average speed is not changed, a dynamic vehicle conversion coefficient is obtained after equation simultaneous solution is established; and calculating the average number of detained vehicles by using the dynamic vehicle conversion coefficient, and calculating the average queuing length of the road network. The road network average queuing length is calculated by using the dynamic vehicle conversion coefficient, the evolution law of traffic flow is dynamically adapted, and the road network average queuing length estimation method is optimized.
本发明提出了一种基于三维宏观基本图的路网平均排队长度计算方法,具体如下:构建路网级交通仿真模型,根据仿真运行结果绘制三维宏观基本图,函数拟合所得三维宏观基本图后结合三相交通流理论得动态车辆折算系数,依照所述三相交通流理论,以车流量、车辆密度以及车辆速度计算路网平均速度,基于路网平均速度不改变的前提下,建立等式联立求解后得动态车辆折算系数,利用动态车辆折算系数计得平均滞留人数后统计得滞留车辆数量从而计算得路网平均排队长度。本发明通过利用动态车辆折算系数计算路网平均排队长度,动态适应交通流的演化规律,优化路网平均排队长度估算方法。
Road network average queuing length calculation method based on three-dimensional macroscopic fundamental diagram
一种基于三维宏观基本图的路网平均排队长度计算方法
2023-10-17
Patent
Elektronische Ressource
Chinesisch
IPC: | G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS |
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