EFFECT OF TRAFFIC ACCIDENT ON JAMMING TRANSITION IN TRAFFIC-FLOW MODEL

A cellular atomaton (CA) model is presented to simulate the traffic jam induced by a traffic accident. We investigate the effect of a traffic accident on the dynamical jamming transition in the traffic-flow model. The dynamical jamming transition separates the moving phase in which all cars are moving and the jamming phase in which all cars are stopped. By the use of computer simulation, it is shown that the dynamical jamming transition occurs at lower density of cars with increasing delay time of a car passing over the position of the traffic accident. The phase diagram representing the moving phase and the jamming phase is shown. We also show the anisotropic effect of densities of cars on the dynamical jamming transition.