A bus approaches a drawbridge that has no traffic signal and no attendant. What must the driver do?

Passenger (P) Endorsement • Free CDL Practice Question
Regulation

49 CFR 383.117(a)(4), Proper procedures at railroad-highway grade crossings and drawbridges

Why This Matters

An open or partially open draw can drop a vehicle into the water below. Stopping well back and visually confirming the draw is fully closed, rather than trusting assumptions, is the only way to be certain it's safe to cross.