Analysis of traffic flow under the influence of urban road traffic accident

In order to study the basic discipline of road traffic flow after the accident, considering the effect of vehicle speed on the basis of traditional cellular automaton, an improved NS model is proposed. Through analyzing the urban traffic flow under the influence of accident vehicles, urban dual-lane traffic flow model under the influence of accident vehicles is constructed, namely vehicle lane-changing model and the improved NS model. Using matlab to prepare simulation program, the impact of traffic accident on traffic flow is analyzed by simulation results, then determining the rate of car going into the road when the traffic flow achieves full saturation. It will provide the basis for the following traffic control and guidance.