Urban Traffic Signal Control Based On Fuzzy Control System

With the development of the urban traffic and the wide use of the technologies of communication, computer and automation on transportation, people begin to apply new theories and technologies on the traffic control . It is very important to improve the control effect of the urban traffic control system. In allusion to the problems in the traffic control system, the article present the urban traffic signal control system based on fuzzy control. To the high complexity and randomicity of the traffic flow, we can adopt fuzzy control technology to adapt the real-time control, without setting up an accurate math model. The input parameter of fuzzy controller is arranged according to queue length. It is prone to be measured and has the smallest error.The article designs the single-intersection fuzzy controller in detail. And it also studies the Coordinated Systems. The two-staged fuzzy controller can decrease the input amount of the fuzzy controller and reduce the complexity of the fuzzy rules. This method is very simple and practicable. It is realistic to improve the control effect of the traffic control system.