1. Volunteer Emergency Responders
Volunteer emergency responders, such as volunteer firefighters and emergency medical services (EMS) personnel, often use green lights on their personal vehicles to signal their status when responding to emergencies. This green light acts as an alert to other drivers that the vehicle is on an urgent call, even if it is not an official emergency vehicle.
In practice, these green lights are usually flashing or steady and placed in a visible location on the vehicle. Their purpose is to help these volunteers navigate traffic more safely and quickly, especially in areas where official emergency vehicles might not be immediately available.
- Green lights indicate a volunteer responder on an emergency call.
- They are not a substitute for official sirens but serve as an additional alert.
- Drivers should yield to these vehicles to allow safe passage.
When you see a green light on a vehicle, it is important to yield as you would for any emergency responder. This helps ensure that volunteers can reach the emergency site promptly, potentially saving lives and reducing harm.
2. Emergency Scene Command Vehicles
Green lights are also used to designate emergency scene command vehicles at incident sites. These vehicles are operated by the incident commander or other senior officials who coordinate the response to emergencies such as fires, accidents, or hazardous material spills.
The green light helps responders quickly identify the command vehicle amidst the chaos of an emergency scene. This visibility is crucial for efficient communication, directing resources, and maintaining overall scene safety.
- Command vehicles display green lights to stand out at emergency scenes.
- This allows responders to locate leadership and receive instructions easily.
- Green lights on these vehicles do not typically imply right-of-way on public roads, but they carry authority within the incident site.
If you encounter a vehicle with a green light at an emergency scene, follow any instructions given by the personnel operating it. Their directions are meant to manage traffic flow, ensure responder safety, and facilitate emergency operations.





