Advanced Traffic Light Preemption Device for Reliable and Efficient Intersection Management

Joseph Craven
2 min readAug 23, 2024

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The EMTRAC system, a cutting-edge traffic light preemption device, has been a pioneer in intelligent transportation solutions for over 30 years. Utilizing precise GNSS technology and secure wireless communication, the EMTRAC system ensures that traffic light preemption is reliable, safe, and efficient, revolutionizing how emergency and transit vehicles navigate through intersections.

A traffic light preemption device is essential for emergency response and public transit systems. The EMTRAC system enables emergency vehicles — such as ambulances, fire trucks, and police cars — to receive a green light at intersections, significantly reducing response times and improving public safety. By facilitating swift and unobstructed passage through traffic, the EMTRAC system helps save lives and enhances the overall effectiveness of emergency services.

EMTRAC-equipped vehicles continuously monitor real-time conditions to determine if traffic light preemption is necessary. When required, the system automatically sends a preemption request to the relevant traffic signal controller, ensuring a green light for the approaching vehicle. This seamless integration with existing traffic infrastructure maximizes the efficiency of emergency response and public transit operations.

Several factors influence whether a traffic light preemption request is granted, including the type of emergency, the vehicle’s location and speed, and current traffic conditions. The EMTRAC system’s advanced algorithms account for these variables, ensuring that preemption is granted judiciously and effectively. This automatic process eliminates the need for driver intervention, allowing operators to focus on their primary responsibilities.

The inclusion of Cellular Vehicle-to-Everything (C-V2X) technology further enhances the EMTRAC system’s capabilities. C-V2X enables precise and secure communication between vehicles and traffic signals, ensuring that preemption requests are processed quickly and accurately. This technology supports real-time data exchange, which is crucial for the efficient operation of a traffic light preemption device.

In addition to improving emergency response times, the EMTRAC system also enhances public transit efficiency. By reducing delays at intersections, transit vehicles can adhere more closely to their schedules, providing more reliable service to passengers. This increased efficiency leads to lower fuel consumption and reduced emissions, supporting environmental sustainability.

In conclusion, the EMTRAC system, with its advanced GNSS technology, secure wireless communication, and integration of C-V2X, sets the standard for traffic light preemption devices. By improving response times, transit efficiency, and overall safety, EMTRAC continues to lead the way in modernizing transportation systems and promoting sustainable urban mobility. As cities grow and the demand for efficient traffic management increases, the EMTRAC system’s role in providing effective traffic light preemption becomes even more critical. Contact the EMTRAC system for the Transit Signal Preemption (TSP) program by phone: (214) 607–0100, Mobile: (618) 316–4633, or visit: https://www.emtracsystems.com

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