Automatic traffic diversion system using traffic signals

Abstract

In order to alleviate the problem of traffic jams, an automatic traffic diversion plan needs to be devised wherein neighbouring traffic signals can communicate. The microcontroller in the traffic signal of a jammed road, communicates this to the previous traffic signal itself, so that users can automatically take a diversion. This prevents further congestion or accumulation of traffic and speeds up clearance, saving time and fuel and minimizing exhaust emissions. In this system, every traffic light needs an additional “fourth light” installed to show the direction of the blocked road. When an inductive loop sensor on the road, continues to detect the presence of vehicles, even few seconds after the signal has changed from red to green, it is inferred as traffic jam. The heart of the traffic control system is the microcontroller chip, and the communication between traffic signals is established using Zigbee as a prototype. Furthermore, the information about the jammed roads can also be intimated to emergency services like fire and ambulance operations.