Which of these vehicles must always stop before crossing

Question

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

Answers

A. Tank trucks marked with hazardous materials placards.

B. Motor homes or pickup trucks towing a boat trailer.

C. Any vehicle with three or more axles and weighing more than 4,000 pounds.

Explanation

Trucks transporting hazardous loads must stop before they cross railroad tracks.

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