The Research for Traffic Signals Calculation and Application Based on Equal Pressure and VISSIM Simulation

The contradiction of demand-supply markedly are manifested at the intersections in urban,the over-saturation intersections as traffic bottlenecks influence the smooth coordination of traffic signals for the arteries in big cities.This paper analyzes the characteristic of saturation vehicle flow,and gives a method of green ratio optimization which parameters adjusted by VISSIM while the Webster lapses based on queue clearance or proportion pressure,then have a green wave signals design under the traffic condition.