Fuzzy Traffic Signal Light Intelligent Control System Based on Microcontroller

Vehicular travel is increasing throughout the world, particularly, in large urban areas. Since there are a lot of traffic congestions, the monitoring and control of city traffic is becoming a major problem in many countries. Due to this factor, traffic signals now become a common feature of cities controlling heavy traffic. Careful planning of these signals is important to increase the efficiency of traffic flow on road. Controlling traffic on oversaturated intersections is a big issue. This paper presents a microcontroller implementation of traffic light control system using fuzzy logic that is used to change the traffic signal cycles adaptively at a four-way intersection. Using the fuzzy logic rules, the system decides, whether to extend the current green signal or terminate it. The control system controls traffic signals for regulating traffic on oversaturated intersections with the integration of left and right turns. The control system also controls the safe and continuous flow of emergency vehicles