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研究由两个单车道构成低速十字路口交通流模型.模型中两车道上的车辆更新遵循无交通灯管制下的并行规则.依据构建相图的原则并采用局部占有概率方法,建立相图,给出相图中的各部分区域的流量表达式.两车道均采用周期边界条件和确定性FI模型进行数值模拟,模拟结果与理论分析精确一致.模型中两条车道的行车规则更接近实际道路交通,该结果为交通管理提供一定的指导作用.
This paper studies the traffic flow model of low-speed crossroads formed by two single lanes.The vehicle updates on two lanes in the model follow the parallel rules under no-traffic light control.According to the principle of building phase diagrams and using the partial occupancy probability method, The traffic flow expressions of each part of the phase diagram are shown in the figure.The two lanes are numerically simulated by the periodic boundary conditions and the deterministic FI model.The simulation results are exactly the same as the theoretical analysis.The driving rules of the two lanes in the model are closer to the actual road traffic The results provide some guidance for traffic management.