What are the high/low alert tones used for?

• A. To alert personnel of an evacuation order.
• B. To indicate a shift change.
• C. To mark the end of a drill.
• D. To request a resource check.

Answer: (A)

High/low alert tones are used to convey an immediate evacuation order. The two tones are designed to grab attention quickly and clearly signal that everyone must stop current activity and evacuate to a safe location. When you hear them, follow your department’s evacuation protocol: move to the nearest safe exit, avoid hazards, stay low if smoke is present, and report to the designated assembly point so personnel can be accounted for.

This kind of alert is distinct from signals used for routine events or drills. Signals for shift changes or drill conclusions serve administrative purposes and don’t carry the same urgent directive to evacuate.