Why should a driver of a placarded vehicle avoid smoking within a specified distance of the vehicle while it is being fueled or during other operations?

Pick an answer

1. Smoking distance restrictions apply only to non-hazardous cargo vehicles
2. There is no restriction on smoking near a placarded vehicle during fueling or loading
3. A spark or flame near the vehicle could ignite fuel vapors or a flammable hazardous cargo
4. This restriction applies only when the vehicle is completely empty

Correct!

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