具有反馈规则的元胞自动机模型及统计法

在薛郁等改进的Nagel Schrekenberg模型基础上,通过引入行车状态变量和反馈规则提出了一种新的单车道元胞自动机交通流模型,利用改进后的新模型,分析了元胞自动机模型中常采用的线统计法,并尝试将交通中的点统计法用于元胞自动机模型中的单个车辆的微观运动的统计.通过计算机模拟,发现点统计法的车流量明显小于线统计法,且离散性较大,但两种方法所反映的车流总体特征基本一致.

One-Dimensional Cellular Automaton Model with Feedback Rule and Its Statistical Approach

Based on an improved Nagel Schrekenberg cellular automaton(CA) model introduced by Xue Yu et al, a new single lane CA model is proposed by introducing a variable of vehicle moving status and a feedback rule. Line statistical approach that is always used in CA model is tested through the new model and node statistical approach that is often employed in traffic field is also adopted. The numerical simulations show that the flux is less, but more dispersive by using node statistical approach than by line statistical approach, but the two approaches are identical to reflect the basic traffic flow characteristics.