Question 74 of 180

What is a general rule about smoking near a placarded hazmat vehicle?

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Smoking near or in a placarded vehicle should be avoided because of the fire and explosion risk certain materials pose
There is no restriction as long as the windows are open
Smoking is allowed as long as it's outside the cab
Smoking is fine as long as the vehicle's windows stay rolled down

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Correct answer to question 74 (Hazardous Materials): Smoking near or in a placarded vehicle should be avoided because of the fire and explosion risk certain materials pose

Why

An open flame near certain hazardous materials, or their vapors, can be enough to ignite them, which is why smoking near a placarded vehicle carries real risk regardless of which specific material is aboard.

Updated: November 2026

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What is a general rule about smoking near a placarded hazmat vehicle?

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