MICROPROCESSOR BASED CONTROL OF TRAFFIC LIGHTS
INTRODUCTION
Many traffic light systems operate on the timing mechanism. The invention relates to an intelligent traffic light control system that is mainly used to control traffic lights in an intersection of roads. After a given interval this timing mechanism changes the lights. An intelligent traffic light system senses the presence or absence of vehicles and reacts accordingly due to that conditions. The invention relates to an intelligent traffic light control system comprising a microprocessor, a manual input device, an enforced switching device and an intelligent detecting device, wherein the microprocessor is used for controlling traffic lights. The idea behind intelligent traffic systems is that drivers will not spend unnecessary time waiting for the traffic lights to change. The status of on/off of a traffic light is controlled through a microprocessor in the system to achieve a periodic switching. An intelligent traffic system detects traffic in many different way. The older system works on a trigger mechanism. The manual input device is used for inputting control parameters of traffic light to the microprocessor, the enforced switching device is used for carrying a preferentially direct operation. The traffic light can also be directly controlled through the enforced switching device. Current traffic systems react to motion to trigger the light changes. Once the infrared object detector picks up the presence of a car, a switch causes the lights to change. While there are many different programming languages today, some programming concepts are universal in Boolean Logic. To reduce the number of associated traffic accidents we need to understand the function of traffic signals so that we can improve driving habits by controlling the speed in order. The main aim in designing and developing of the Intelligent Traffic Signal Simulator is to reduce the waiting time of each lane of the cars and also to maximize the total number of cars that can cross an intersection given the mathematical function to calculate the waiting time. The shortcoming of prior technique is that the control parameters cannot be automatically adjusted by the system according to traffic flows in each direction. The more number of drivers who know about the operation of traffic signals, the less frustrated they are going to be while waiting for the lights to change. . It means that the traffic control in an intersection of roads will be not in a best state at all times.
The traffic signal system consists of three important parts.
