Analysis on Traffic Flow Stability by Molecular Kinetics

In order to effectively prevent the occurrence of traffic congestion,reduce traffic accident rate, based on the criterion of Lyapunov stability,the traffic flow stability is analysed by molecular kinetics and the model is developed regarding the traffic flow at the state of uniform synchronous flow as the object, considering the integrative effect of people,vehicles,road and environment,etc. With the trajectory graph of vehicle and the state diagram of traffic flow,the evolution process of traffic flow stability influenced by various factors of traffic disturbance is analysed. The mechanism inducing the phenomenon of traffic flow instability is revealed. It is pointed out that traffic flow stability can be improved considering traffic scenes such as people, vehicle,road and environment.