Emergency Vehicle Preemption Device cuts off the normal traffic signal timing to give a green light to coming emergency vehicles so that they can pass comfortably through intersections to reach emergencies quickly and safely. EVP can help reduce collisions by providing a red light to other car drivers that may cross the way of the emergency vehicles. EVP permits the other drivers to upgrade their awareness of emergency vehicles and warn them to yield the right-of-way by increasing overall safety. It reduces the travel time for the emergency vehicle, which helps improve the chances of saving lives if anyone is seriously injured. EVP approaches and technologies: Basic systems make use of zone detection. Equipment placed on the emergency vehicle sends out a clear infrared signal at the intersection once the vehicle reaches a given range. As soon as the traffic signal receives this message, it attempts to modify its signal timing to give a green light as early as it can.