What is the standard evacuation signal used by firefighters?

The standard evacuation signal used by firefighters is three blasts on an air horn, which may also be represented by sirens sounded for a duration of 15 seconds. This protocol is widely recognized and adopted in emergency situations to effectively communicate the need for immediate evacuation. The use of three blasts helps to differentiate the evacuation signal from other types of noise or alerts, ensuring that it stands out and is clearly understood by all personnel present.

Additionally, incorporating a duration for the signal, such as 15 seconds, emphasizes the urgency of the situation and provides a distinct timeframe that can be easily recognized in chaotic environments. This method of signaling is crucial for ensuring the safety of everyone involved and helps maintain an organized approach during potentially hazardous situations.