Research on optimization of signal phase at intersection based on VISSIM simulation software

In order to reduce the conflict between pedestrian and vehicle at intersection under real-time changes, different traffic status at cross intersection and T-shaped intersection two typical intersections on present urban roads are chosen as analyzing objects, and through the redesigning of signal phrases, a signal phases optimization scheme to eliminate the conflicts between pedestrian and vehicle at theses intersections is offered. For testing the possibility of the optimization scheme, a set of evaluation indexes are constructed, and the optimization scheme are simulated at two different typical intersections respectively in Hefei and Xi'an based on Vissim software. the result of simulation showed that the evaluation indexes such as points of conflict, delay of pedestrian and vehicle, park rate, time and space resources of pedestrians are substantially improved when the optimization scheme is applied at the intersections.