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冲击波剖面模型是动态追踪交叉口排队和队列消散过程的一种模型,对其建模过程进行了改进,使其更符合实际交通流的运行情况。在此基础上,对含有5个信号交叉口的干线进行了数值仿真,在不断改变其交通需求的情况下,得到了干线输出流量和干线内累积车辆数的值。研究发现:干线输出流量和干线内累积车辆数存在一定的固定关系,从而验证了宏观基本图的存在性,为后续宏观基本图的研究和应用提供了一种快速准确的方法和一定的理论基础。
The shock wave profile model is a model that dynamically tracks the process of queuing and queue dissipation at an intersection, and improves the modeling process to make it more in line with the actual traffic flow. Based on this, the main line with five signalized intersections is numerically simulated, and the value of the main line output flow and the accumulated number of vehicles in the main line are obtained under the condition of constantly changing the traffic demand. It is found that there is a certain relationship between the output flow of trunk line and the accumulated number of vehicles in the main line, which verifies the existence of the macro basic map and provides a fast and accurate method and a certain theoretical basis for the research and application of the subsequent macro basic map .