关键词: 交通工程, 交通流特性, 自组织理论, 道路交通拥塞, 自疏散模型

Abstract:

In order to further discuss the way of controlling the road traffic congestion, to provide the theoretical basis and model for mitigating the social problem, and to improve the theory frame of the study of controlling the road traffic congestion, the combination of qualitative and quantitative way is used in this paper. On the basis of analyzing the evolution of road traffic congestion (the process of the formation and dissipation of the road traffic congestion, which includes the process of traffic state from the free-flow to the crowd then to the blocked, and then changes in the opposite direction), it comes to a conclusion that the hysteresis of traffic flow and vehicles obeys Poisson distribution. Furthermore, the order parameter of traffic congestion is determined according to the synergetic of self-organization, and the self-evacuation model of road traffic congestion is built on the basis of minimum time and the optimal path choice in Dijkstra ALG. Finally the paper verifies the validity of the model by the application and analysis of the model. The research result has a certain theoretical significance and practical value for easing the traffic congestion and improving service capability as well as the operating efficiency.

Key words: traffic engineering, traffic flow characteristics, self-organization theory, road traffic congestion, self-evacuation model