Optimal design for traffic light and simulation based on MATLAB

With the developing of urbanization, as well as the significant increasing of automobile in city, the phenomenon of traffic jam has occurred frequently. As a result, municipal administration has widened the city´s trunk line, the traffic management bureau has increased traffic lights at crossroads, but we could not see much great change in city traffic condition. These measures, for instance, how to make use of existing urban roads more effectively, how to regulate the time of the traffic lights, and how to use the minimum investment to ease the city´s jam, possess realistic significance. The primary goal of this paper based on the optimization of phase and time of traffic lights is to achieve the optimal research on both sides not only “Green light wave band” but also “Inverse green light wave band”, and simulates optimization of going through inverse green light wave band by using the software of MATLAB according to the constraint discriminate of bi-directional green light wave band what we calculated in the paper.