Question

Which of these vehicles must stop before crossing railroad tracks?

A.Tank Trucks marked with Hazardous materials placards.
B.Motor homes or pickup trucks towing a trailer.
C.Sport unity vehicles carrying four or more persons.

Answer 1

Tank trucks marked with Hazardous materials placards must stop before crossing railroad tracks.

Step-by-step explanation:

According to traffic rules and regulations, tank trucks marked with Hazardous materials placards must stop before crossing railroad tracks. This is because these vehicles carry potentially dangerous substances, and it is important to ensure their safe crossing.