Which color of barrier tape is used to demarcate the hot zone at a technical rescue incident?

• A. Yellow
• B. Red
• C. Blue
• D. Black

Answer: (B)

The heat of a technical rescue incident must be kept away from unprotected personnel, so the boundary around the most dangerous area is marked with a color that clearly signals immediate danger. Red barrier tape is used to designate the hot zone because it instantly communicates a high-risk, off-limits area where only trained responders with proper protection should enter. This clear, high-contrast cue helps everyone quickly identify where the most dangerous conditions exist and prevents accidental exposure.

In this setup, other colors generally signal different levels or areas (for example, caution around less dangerous zones), so they don’t convey the same urgent boundary as red. Red’s association with danger and restricted access makes it the best choice for the hot zone.