What is the mandatory evacuation distance for a delivery truck?

• A. 320 feet
• B. 860 feet
• C. 640 feet
• D. 400 feet

Answer: (C)

Evacuation distances are set to protect people from potential vapor dispersion and exposure during hazmat releases. For a delivery truck, the standard starting exclusion zone is six hundred forty feet. This radius provides a practical buffer to account for the chance that vapors could migrate downwind and affect nearby areas while responders assess the situation and implement controls. The exact distance may change with wind, weather, product toxicity, and the amount released, but six hundred forty feet is used as a solid, general guideline for a typical vehicle incident. Distances smaller than this could leave people exposed if vapors travel with the wind, while larger distances are more conservative and may impede urgent response actions.