论文部分内容阅读
研究了城市网络交通流的动态演化行为.在网络交通流的演化过程中,出行者根据路网状况不断调整自己的出行路径,假设OD对出行需求和路径流量受到OD对出行成本的影响,考虑在交通诱导下新进出行者的路径选择方式,以Logit分配模型表示新进出行者选择出行路径的比例,提出一个改进的交通流演化模型,并分析了该模型及其零点的一些特性,它能更好地反映现实中交通流演化结果.数值实验结果表明,模型可近似描述交通流演化到用户均衡态的过程,交通流能够收敛到均衡状态.
We study the dynamic evolvement of urban network traffic flow.In the evolution of network traffic flow, travelers continuously adjust their own travel path according to the condition of road network. Suppose OD impact travel demand and route traffic by OD on travel costs, and consider Based on the traffic selection mode, the Logit distribution model is used to show the proportion of new travelers choosing the travel route. An improved traffic flow evolution model is proposed. Some characteristics of the model and its zero point are analyzed. The results of numerical experiments show that the model can approximate the evolution of traffic flow to the equilibrium state of users, and traffic flow can converge to an equilibrium state.