基于元胞自动机的港湾公交站间距影响研究

Research into distance influence of harbor-shaped bus stop based on cellular automaton

公交系统对城市交通流的影响十分显著,在对现有经典交通流元胞自动机模型进行总体分析的基础上,提出了一种考虑公交车辆和港湾式公交停靠站影响的多速混合车辆双车道元胞自动机模型,重新标定了元胞长度、运行车速和随机慢化机制,引入了公交车停靠站,改进了车辆变换车道规则。通过计算机模拟,再现了传统交通流三参数之间的关系,为更好地描述城市混合交通流奠定了基础。

The impact on urban traffic flow of public transit system is very prominent. Based on some cellular automaton （CA） models of traffic flow, a new traffic CA model with mixed traffic flow, which considered the public transport vehicle and harbor- shaped bus stop in two-lane, was proposed. It calibrated the parameters such as length of the cellar automaton, operation speed, and random slow mechanism. And it not only set up bus station and improved vehicle changing lane regulation, but also limited maximal velocities to different vehicle types and advised that they occupied different number of cells at every time step. Some simulations were carried out and the results show that this model reproduced the relationship among three parameters of traditional traffic flow, which paved the way for studying mixed traffic flow in detail.