Exploring the Benefits of Traffic Signal Priority

Traffic Signal Preemption Device (also known as traffic signal prioritization) is a system that allows an operator to override the normal operation of traffic signals. The most common use of these systems is to operate traffic signals in the path of an emergency vehicle to stop opposing traffic and change the right-of-way for the emergency vehicle, reducing response times and improving traffic safety. Signal preemption can also be used in light rail, streetcar, and bus rapid transit systems to give public transportation priority through intersections and rail systems at crossings to avoid collisions.


Traffic signal priority provides the green light for emergency vehicles, trains, and light rail vehicles. Preemption differs from priority in that it takes control of the intersection and immediately changes all directions to red except for the direction involving emergency vehicles, trains, or light rail. Preemption will override any traffic signal priority and terminate the extended green light in favor of the vehicle requesting preemption. 

This helps emergency vehicles reduce the time it takes to reach their destination by clearing the road with traffic signals. It also improves safety by allowing an emergency vehicle, train or tram to proceed by providing a red light to all vehicles, pedestrians and cyclists who are expected to stop.

The benefits of preemptive systems are that they can significantly reduce response times or duration of emergency vehicles. Nationwide studies have shown a 15 to 50 percent reduction in response times and a 75 percent reduction in accidents involving emergency vehicles. These improvements have a significant impact on the outcome of medical emergencies and significantly improve traffic safety.

At Emtrac Systems, we seamlessly combine radio, cellular and GPS technology into one easy-to-use tool. Newly designed preemptive systems, such as GPS, cellular and radio technologies, can help organize traffic well in advance and easily reduce emergency response times. For further information, contact EMTRAC Systems visit https://www.emtracsystems.com/


 

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