Study on Chaos of Simulation Traffic Flow

Dynamic simulation model of five vehicles was established based on nonlinear car-following model.Utilizing the software of Matlab,the simulation traffic flow of five vehicles was generated.Under certain conditions,the curves of space headway and speed difference between the front vehicle and the following vehicle were given.The simulation results were analyzed in theoretically with real traffic flow.Based on chaotic time series analysis,a method was put forward to prove the chaotic characteristics of simulation traffic flow generated by nonlinear car-following model,and the influence of the model parameters on the dynamic characteristics of simulation traffic flow was analyzed.The results are helpful to understand the dynamic characteristics of real traffic flow and provide theoretical foundation for the short time traffic flow forecasting,inducement and intelligent transportation control.