【摘要】 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。更多还原

【Abstract】 Speeding is one of the major causes of the accidents on expressways with serious consequences, a great threat to people’s life and property. The phenomenon was studied based on the cellular automaton model. The traits of speeding were analyzed, and then the influence of speeding was taken into account by introducing new rules into the old CA model. The new model contained many kinds of vehicles and accorded with the nonlinear traffic flow better. The simulation with the new model found that speeding would make the traffic flow’s velocity slower and damage the safety of the traffic flow finally.更多还原