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超速行驶是引起交通事故的主要原因之一,会造成巨大的人员与财产损失,基于元胞自动机对高速公路上的超速行为进行了研究。首先详尽分析了超速行驶特性,然后在现有的元胞自动机交通流模型基础上,构造了符合超速车辆特性的行驶规则,使之成为更符合现实道路状况的元胞自动机模型。该模型中的多种类型个体间交织影响,再现了现实交通流的非线性特点。运用新模型进行数值模拟仿真,发现超速行为将会降低交通流的平均速度,并且最终危害交通流的系统安全。
Speeding is one of the main causes of traffic accidents, causing huge loss of people and property. Based on the cellular automaton, the speeding behavior on expressway was studied. First of all, the speeding characteristics are analyzed in detail. Then, based on the existing traffic model of Cellular Automata, the driving rules that are in line with the characteristics of speeding vehicles are constructed, making them a cellular automaton model that is more in line with the actual road conditions. The model interweaves multiple types of individuals and reproduces the nonlinear characteristics of the actual traffic flow. Using the new model for numerical simulation, it is found that overspeed behavior will reduce the average speed of traffic flow and ultimately endanger the system safety of traffic flow.