摘要
针对车辆行驶的交通流问题,兼顾现实中的多车道及车辆性能差异两个问题,在开放性边界的条件下,将基础的STCA模型进行改进,建立对称双车道大小车变道元胞自动机模型。文章核心在于变道规则的演化设计,根据逐步改进的变道规则,模型分为三种:模型一,大、小车都不允许变道;模型二,小车允许变道但同时不允许超车,大车不允许变道;模型三,小车既可以变道又可以超车,大车允许变道不允许超车。利用Matlab软件进行计算机仿真模拟,得到三种模型的时空斑图,图形结果显示:在保证安全性的前提下,车辆的变道、超车行为在改善交通状况的方面确实起到了很大的作用,堵塞相变少,同步流得到提升,道路利用率得到了提高,较STCA模型模拟的交通流更接近现实,也更具有指导意义。
in the open boundary＂ condition, by improving the basic SCTA model, paper established a Cellular automaton ofhybrid vehicle in symmetrical per is the evolutionary design two-lane. The care of this pa- of lane changing rules. Accord- ing to the improved lane changing rules, the model is divided into three types. Model I： lager and small vehicle are not allowed to change lanes. Model 1]： the small cars are allowed to change lanes but not allowed to overtake： the large cars not allowed to change lanes. Model NI： the sinai1 ears are al- lowed to change lanes and to overtake; the large cars are al- lowed to change lanes but not allowed to overtake. Taking advantage of Maflab software to simulate, models obtain three types of space-time figure. On the premise of safety, the re- sult display the behavior of changing-lane and overtaking in improving the tragic situation has indeed played a big role. It is shown that the congestion is less. The synchronous flow is improved, and the road utilization rate is promoted. This mod- el is closer to reality and more instructive than STCA model.
出处
《物流科技》
2017年第10期90-93,110,共5页
Logistics Sci-Tech
关键词
交通流
元胞自动机
双车道
混合车辆
变道规则
仿真模拟
traffic flow
Cellular automation
twoMane
hybrid vehicle
lane changing rule
simulation
