“INTELLIGENT TRAFFIC SIGNAL CONTROL SYSTEM”

Abstract

Traffic congestion problem is a phenomenon which makes a huge impact to the transport system. This
problem is quite common amongst the cities all around the globe. Our basic idea behind this project is to develop a
density based adaptive traffic signal system. The signal duration automatically changes in accordance with the number
of vehicles on that particular road unlike the conventional traffic light system. So there is a need for longer green signal
duration as compared to signal which have been used as of now, when more traffic density is at one side of the junction
as that of the opposite side of the intersection. This can be achieved by using IR sensors to sense the density of traffic on
each road and then sending these signals to the microcontroller to dynamically assign the signal timings. A traffic light
controller is designed to address the normal as well as emergency situations. This system was designed to operate when
it received signal from emergency vehicles based on radio frequency (RF) transmission and used the microcontroller to
change the sequence back to the normal sequence before the emergency mode was triggered. This system will not only
reduce traffic jams but it will also reduce accidents which often happen at the traffic light intersections because other
vehicles had to huddle in a hurry for making way for emergency vehicle.