What is the purpose of smoke indicators in ventilation operations?

• A. To mark the location of smoke color
• B. To help ventilation speed
• C. Acts as a visual indicator towards our escape route
• D. To measure air pressure

Answer: (C)

Smoke indicators are used to guide firefighters when visibility is low by showing the path of smoke and pointing toward the safest way out. They act as a visual cue that helps crews orient themselves and move toward an escape route where the air is clearer, reducing the chance of getting trapped as conditions change during ventilation.

They aren’t about marking smoke color, which isn’t the purpose of indicators here. They don’t directly make ventilation faster, since speed depends on fan placement and openings. They also don’t measure air pressure, which requires different instruments.