How Can You Reduce Traffic Signal Pre-emption Time
                     How Can You Reduce Traffic Signal Pre-
emption Time?
An Introduction
A traffic light precursor" is a device that helps the phase time or 
sequence of a semaphore, which can be modified or changed. 
Ideally, Precaution systems can effectively reduce vehicle 
response time in emergency situations. Many studies show a 20-
55 percent reduction in response times and a 70 percent 
reduction in emergency vehicle collisions. 
 
These changes had a significant impact on the results of the ambulance 
and road safety improved considerably. Traffic Signal Preemption systems 
are designed to help emergency vehicles get where they need to go with 
minimal intervention by automatically changing traffic signals to let them 
through. But unfortunately, many of the prevention systems used have 
outdated technology that slows down response times and even puts the 
lives of other drivers at risk. 
 Improve prevention with new technology: 
Mobile and radio technologies are becoming very popular to 
overcome the shortcomings of optical and infrared solutions. 
Connected to GPS, emergency vehicles can immediately plan the 
entire route after receiving a call and change traffic lights in time 
to clear obstacles and ensure the safe movement of the vehicle 
to its destination. 
Remote Monitoring and Reporting: 
New pre-sale systems include cell phone and radio technologies 
that enable counting, as well as special features not found in 
competing pre-sale systems. Some premarket systems also have 
built-in cabinet monitoring to ensure they are operating 
normally and to alert the right people when something isn't 
working. 
Conclusion
After the development of optical and infrared technology, traffic 
sign prevention systems were developed decades ago. The latest 
prevention systems, such as GPS, cell phone, and radio 
technologies, can help clear traffic early and significantly reduce 
emergency response times. 
For Transit Signal Preemption (TSP) transmitters or programs, 
contact EMTRAC. 
Contact Us: 
• Location: Manufactured By STC, Inc. 1201 W. Randolph St, 
McLeansboro, IL 62859
• phone: Richard D'Alessandro: (214) 607–0100
• Fax: (214) 607–0105
• Email: [email protected]
• Web: emtracsystems.com