Each second matters when wildfires strike. During fire season, congested roads, evacuation routes, and unpredictable traffic conditions can delay fire engines and emergency responders when communities need them most. That’s where emergency vehicle preemption technology, which grants fire and rescue vehicles priority at traffic signals, plays a critical role in keeping response times low and saving lives.
Why Fire Season Demands Faster Emergency Response
Fire season intensifies every year across the western United States, bringing longer burn periods and higher incident volumes. As traffic volumes increase, especially during evacuations, signalized intersections can quickly become bottlenecks for fire and rescue vehicles. Traditional green light coordination often cannot adapt fast enough to these unpredictable conditions.
Emergency vehicle preemption (EVP) systems address this problem directly. By automatically adjusting traffic signals to give responding units green lights as they approach, EVP keeps routes clear and consistent even in high-traffic environments.
How Smart Preemption Systems Actually Work
Modern preemption systems rely on real-time communication between emergency vehicles and signal controllers. Using GPS, radio, or optical emitters, equipped vehicles send a secure signal to the intersection’s controller. The system then safely adjusts the signal phase, turning lights green for the responding unit and red for cross traffic.
Hardware such as the Tomar Strobecom II Optical Emitter gives emergency vehicles the ability to transmit preemption requests to intersections along their route. This enables first responders to navigate congested areas more efficiently, particularly when conditions are rapidly changing during a fire event.
Western Systems’ partnerships with Yunex Traffic and Tomar bring these capabilities together in cohesive Smart Preemption Solutions that coordinate multiple intersections in sequence, ensuring uninterrupted access to critical routes.
Real-Time Data Improves Coordination and Safety
During wildfire emergencies, communication between field units and signal infrastructure becomes vital. Smart preemption solutions integrate directly with traffic management systems, allowing agencies to monitor emergency routes in real-time.
When paired with connected vehicle technology, such as the Yunex Traffic RSU Connected Vehicle unit, preemption systems can share data across corridors to synchronize signals ahead of approaching vehicles. This creates a more adaptive and coordinated network, improving both travel time and intersection safety.
When integrated with connected vehicle infrastructure, these systems can:
- Track the exact location and speed of fire engines or ambulances.
- Coordinate signal timing across corridors to reduce delay.
- Provide updates back to traffic operations centers for route management.
This not only helps emergency responders reach scenes more quickly, but it also enhances public safety by minimizing secondary risks, such as intersection crashes or blocked evacuation routes.
Reducing Delays, Protecting Communities
Every minute saved through EVP directly impacts the success of fire suppression and life safety. Even modest improvements in response time can make a measurable difference in containment outcomes and community safety. In suburban and rural fire districts where intersections may be spaced farther apart, preemption ensures that limited personnel and equipment can respond efficiently without unnecessary delay.
Systems like the Tomar Strobecom II Optical Emitter and Yunex Traffic RSU Connected Vehicle technology enhance this reliability by integrating field units and traffic signals into a single, coordinated system. These tools help reduce intersection conflicts and allow fire engines to maintain consistent speeds, lowering variability across the network. For transportation agencies, this also supports signal coordination and system uptime by minimizing unpredictable, last-second signal interruptions and keeping corridors open when seconds matter most.
Supporting Interagency Coordination During Disasters
Fire season rarely affects just one agency. Smart preemption technology enables interoperability among fire, EMS, and law enforcement fleets, ensuring that all emergency vehicles, regardless of department, can activate signal priority when needed.
Because these systems operate on standardized communication protocols, they integrate seamlessly with existing signal infrastructure and Intelligent Transportation Systems (ITS). This interoperability supports coordinated disaster response, particularly in multi-jurisdictional fire events or regional evacuations.
Building a More Resilient Transportation Network
Beyond response speed, emergency vehicle preemption strengthens a city’s or county’s overall transportation resilience. When preemption systems are cloud-connected and integrated with broader smart city applications, agencies gain real-time visibility into the performance of their corridors. This allows them to monitor uptime, analyze system health, and adapt to changing conditions without extensive fieldwork.
By combining AI-based detection, preemption, and traffic cabinet communication systems, Western Systems enables agencies to design a connected network that prioritizes safety, reliability, and operational readiness throughout the year, not just during fire season.
Keeping Communities Safer When Every Second Counts
Emergency vehicle preemption is more than a convenience. It is a public safety tool that saves time, reduces risk, and keeps critical routes moving when every second matters. As fire seasons grow longer and more intense, these systems help first responders reach the scene faster and protect more lives.
Western Systems is proud to support agencies across the western United States with smart preemption and priority solutions through partnerships with Yunex Traffic and Tomar. To learn how preemption can strengthen your agency’s emergency response strategy, contact Western Systems today.