Question 35 of 180

While fueling your placarded hazmat vehicle, what precaution should you take?

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Precautions are only needed for fueling at night
Fueling a placarded vehicle requires no special precautions
It's fine to leave the vehicle completely unattended while fueling, as long as the nozzle is set to lock open automatically
Stay with the vehicle or otherwise follow your company's procedure against unattended fueling of a placarded load

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Correct answer to question 35 (Hazardous Materials): Stay with the vehicle or otherwise follow your company's procedure against unattended fueling of a placarded load

Why

A fuel nozzle running unattended next to a placarded load combines two hazards at once, which is why staying with the vehicle during fueling is the expected precaution.

Updated: November 2026

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While fueling your placarded hazmat vehicle, what precaution should you take?

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