SMART TRAFFIC SIGNAL CONTROL

Electrical Engineering

Due to the rapid increase in the number of vehicles traffic congestion is a severe problem in most of cities across the world and it has become a nightmare for the citizens. Our project aims at reducing traffic congestion and unwanted long-time delay during the traffic light switchovers especially when the traffic is very low. It is designed to be implemented in places near the junctions where the traffic signals are placed, in order to reduce the congestion in these junctions. It keeps track of the vehicles in each road and accordingly adjusts the time for each traffic light signal. The higher the number of vehicles on the road the longer will be the time delay allotted for that corresponding traffic light signal. The microcontroller board used in this project is Arduino nano and Standard red, yellow, and green lights are controlled by the Arduino. The system contains 2 IR sensors that are mounted on either side of the road. It gets activated and receives the signal as the vehicles pass close by it. Depending on the signal received from IR sensors, Arduino calculates the delay time for each signal. In every unit of traffic light, 2-digit seven-segment display is used along with two 74HC595 serial to parallel shift resistors. These shift registers receive serial data from Arduino nano and give parallel data to 7 segment displays to show the timing. The complete system is powered through 5V, 2Amp power adapter.

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