Signal Phase Composition Optimization Based on Cluster Algorithm

In order to design the signal phase composition rationally, starting with the figure of vehicle operating characteristics, we defines the relative utilization of phase green time by analyzing the phase combinations. Thus, the problem of traffic composition is viewed as clustering problem, and a phase combinatorial optimization model is constructed.By selecting relative utilization of phase green time and delay time as evaluation index of phase combinatorial optimization, through the comparative analysis of vissim simulation, total delay of signalized intersection is reduced by about 15%. This provides a new method for signal phase structure design.