基于完全非对称简单排它过程(TASEP)的典型道路交通流研究

交通流理论研究对于解释交通现象、分析交通问题和指导交通管理具有重要指导作用。本项目旨在通过对典型道路交通流模型的研究，揭示道路间的耦合与源汇点共同作用下的交通流特性，形成典型道路交通流理论。根据交通实测采集的交通流数据与双通道十字路/环形路的结构特点，建立完全非对称简单排它过程（TASEP）模型，利用平均场理论和计算机模拟相互检验的方法解析模型，获得典型道路交通流的流量与密度，探索不同交通流参数对交通流流量、密度及相图的影响规律；并通过分析交通流基本图、时空图及同步流速度特性，揭示同步流产生机制，探究自由流、同步流以及宽运动堵塞相三相的相变机制，阐明交通流相变特性及复杂特性，剖析交通流内在演化规律及典型道路产生堵塞的原因，为交通出行和交通系统的规划管理提供科学依据。

Traffic flow theory plays an important role in explaining the traffic phenomena, analyzing the traffic problems and guiding the traffic management. This project plans to disclose the influence mechanism of coupled road and junctions on the traffic flow and to obtain the traffic flow theory of the typical roads by investigating the TASEP models of the typical roads. Based on the massive empirical observation data and the structure of two-lines with crossroad/roundabout, the models of TASEP are built. The mean field theory and numerical simulation are carried out and verified mutually to calculate the models and gain the traffic current and density of the typical roads. The effects of different traffic parameters on the traffic current, density and phase are explained. By analyzing the traffic flow diagrams, spatial-temporal diagrams and the property of synchronized flow, to figure out the generation mechanism of synchronized flow and the mechanism of phase transitions between free flow, synchronized flow and wide moving jam. The properties of flow phase transitions and the complexity of traffic flow are revealed. In addition, the inner evolution law of traffic flow and the reason of traffic congestion on the typical roads are also illustrated. It provides scientific support for planning and management of traffic systems.