Density Based Traffic Control with Emergency Override

Abstract

The human population in cities is increasing day by day and therefore number of vehicles is increasing exponentially. Traffic control signals have been playing significant role in managing traffic flow in cities. But the conventional traffic control signals fails in time management. It allocates equal time slots to each road irrespective of the traffic density. This creates unnecessary waiting for drivers, which is not possible every time. Therefore, we propose density based traffic control system, which allocates different time slots to each road according to vehicle density. The vehicle density is measured in three zones low, medium and high. The traffic density in each lane is measured using IR sensors. Accordingly the traffic signal lights give the green light based on the vehicle density. This system also comes with RF signal override control in case of emergency vehicles such as fire brigade and ambulance. The RF transmitter and a GPS module are placed in the emergency vehicle. Whenever the override feature is activated, the green light is given in the desired lane for some time by blocking all the other lanes by giving them red light. So this is also a priority based system. This system, therefore, offers advantages over conventional traffic control system.