关键词: 交叉路口, 变相位, 信号控制, 系统仿真

Abstract: Presents signal changed phase control algorithm for single intersection based on fuzzy logic and finishes the simulation. The traditional signal control algorithms are concerned about optimization of phases' time and ignore optimization of phases' combination. Take example for four-phase signal control used commonly in real world, research discovers that flexible combination of phases can acquire better control results under the premise of unchanged old order of four phases. Compared with traditional signal fuzzy control method for single intersection, signal changed phase control algorithm possesses flexible phase combination and phase time, it adapts to the real-time change of traffic status in the intersection very well. Simulation is finished based on the typical the four corners and traffic flow in different stages, the result indicates that signal changed phase fuzzy control is prior to traditional fuzzy control for the intersection of uneven traffic flow and it can reduce vehicle delay time greatly. The proposed algorithm is practicable and useful for city intersection signal control.

Key words: change phase, signal control, system simulation , intersection