When a vehicle is placarded for hazardous materials, you should not drive near an open fire unless you can:

• A. Safely pass without stopping
• B. Stop and wait until the area is clear
• C. Continue at normal speed
• D. Engine off and idle

Answer: (A)

The key idea here is minimizing exposure to ignition sources when a vehicle carrying hazardous materials is near an open flame. Hazardous materials can release flammable vapors, and an open flame nearby creates a serious fire or explosion risk. The safest action is to pass through the area quickly and without stopping, so you minimize the time your vehicle and its exhaust, brakes, or other systems are in proximity to the flame and potential vapors. If you cannot pass safely without stopping, you should not proceed into that area and should choose a detour or wait at a safe distance until conditions are clearly safe.

Stopping near the flame would prolong exposure and could introduce additional ignition risks, and continuing at normal speed still keeps you in the hazard zone without guaranteeing safety. Since simply turning the engine off or idling doesn’t inherently address the ignition risk in the immediate area, the best course is to pass only if you can do so safely without stopping.