A new approach to modeling of traffic flow in cities

摘要

BAsed on the properties of traffic, macroscopic dynamic equations are set up to simulate the flow of traffic. Besides relaxation term and compressibility term, a changeable area term is composed in the model to describe the effect of car parking, toll- booth, traffic incidents, road grading and bicycles on traffic flow. With numerical method, three cases are presented to simulate the changing lane area with time and space and the propagating process of thigh traffic density. The results show that the dynamic model ca reasonably describe the evolution of traffic states in various complicated occa- sions.