DONE - Which of these vehicles must always stop before crossing railroad tracks?

Question: Which of these vehicles must always stop before crossing railroad tracks?
A. Tank trucks marked with hazardous materials placards.
B. Motor homes or pickup trucks towing a boat trailer.
C. Any vehicle with 3 or more axles or weighing more than 4,000 pounds.


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Tank trucks marked with hazardous materials placards.

Tank trucks vehicles marked with hazardous materials placards must always stop before crossing railroad tracks.

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