A GPS based traffic light pre-emption control system for emergency vehicles

Emergency vehicles such as ambulances, police force vehicles and fire fighting vehicles are required to reach their destination as quickly as possible. Any unnecessary delays experienced on them along their way could eventually cause dangerous events; leading to damages in lives or properties. One of the most important delays is the time that is consumed on travelling between the starting point and the destination point of these emergency vehicles; and in intersections with traffic lights, especially when these intersections are congested. In this paper we discuss the design and implementation of an automatic preemption traffic control system, based on the global positioning system satellites. It ensures the arrival of emergency vehicles to their destinations on the minimum time possible. The results indicate that the proposed system has an optimum solution for the delay time experienced on the emergency vehicles along their path.