考虑信号灯作用的交通流模型

he traditional microscopic traffic flow model can not describe the interaction between car and traffic signal lights, while putting more emphasis on the interaction among cars． In consideration of this factor, a cellular automaton combined with car following model is presented, in which a car changes its speed according to its headway by integer times．On the study of traffic signal function, the model of leading car and following car at road and cross was presented respectively．At road segment, to set large distance threshold intervals with a defined maximum velocity, which defines a car's velocity wave trend．Approaching cross, when a car reaches the stop line as a leading car, the signal state decides its next movement． If it is a following car, it obeys following rules．At last, many simulations' results prove the model's feasibility and correctness．