Centralised Traffic Signal Preemption in the Internet of Things Platform

Rapid growth in number of vehicles on the road has resulted in increased traffic congestion. Minimizing trip duration of an Emergency Vehicle (EV) from source to destination has become essential, potentially saving lives and properties. Some of the factors that have contributed to the time taken for EV to reach the destination are distance from source to destination, speed of vehicle and congestion at traffic intersections. Although emergency vehicle has been given priority among other vehicles in the traffic, without establishment of a proper traffic pre-emption system, an emergency vehicle can still be stuck in traffic due to time taken to clear traffic at the intersections. Another issue to be considered is the prioritization of multiple emergency vehicles arriving at an intersection. In this paper, a review of various approaches to traffic preemption systems and a centralised traffic preemption system based on Internet of Things platform is presented.