Question

Which of these vehicles must stop before crossing railroad tracks?

Answer 1

ANSWER:

Tank trucks marked with 'hazardous material placards' is the vehicle which must be stopped before crossing the railroad tracks.

EXPLANATION:

• Basically, whenever the train is about to arrive or is about to pass, then all the vehicle must stop before crossing the rail road to prevent accidents.

• In this case, there are tanks with hazardous materials which may cause even more accident due to which the tank truck should be stopped before crossing the rail road.

Answer 2

The answer to your question is, Tank trucks marked with hazardous materials.

Hope i could help :)