Which color of tape is usually used to demarcate the hot zone at a TRI?

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

Answer: (C)

In scene safety, tape colors quickly communicate how dangerous an area is and who should enter. The hot zone is the area with immediate danger from fire, heat, collapse, or hazardous materials, where only trained personnel with full PPE operate. Red tape is used to mark this zone because red universally signals danger and grabs attention, making it clear at a glance that entry is restricted to authorized personnel. Yellow tape typically marks a warm or caution area where operations occur but conditions are not immediately life-threatening. Blue or white tapes may be used for other functions, such as signaling boundaries or cold zones, depending on the agency, but they don’t designate the hot zone. So red is the color that best indicates the hot zone at a TRI.