Utah Class D Written Knowledge Test Practice
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Passing target: 80% (40/50)
A snowstorm strands you in your car, and you run the engine to stay warm. What should you do to prevent carbon monoxide poisoning?
Blue car A is stranded in deep snow with snow around its rear bumper and rear wheel. The caption states that the engine is running for warmth. No exhaust or window action is highlighted.
Correct answer: Keep the exhaust pipe clear of snow and keep one window slightly open
Why
Run the engine and heater until the car is warm, then turn them off; about 10 minutes each hour is enough. Turn on the hazard lights, hang a brightly colored cloth from the window or door, and keep at least one person awake. Blankets help protect against frostbite and hypothermia.
Verified against Utah Driver Handbook · Weather: cold weather · p. 73, 74
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