CDL · Passenger vehicles
When the rear door of a city transit bus is open, which brakes does the door interlock apply?
Correct answer: The service brakes.
Answer options
- AThe engine retarder
- BThe service brakes Correct
- CThe parking brake
Why
On city transit buses, opening the rear door makes the interlock set the service brakes and hold the throttle at idle until the door closes again. It is only a safety aid and never takes the place of the parking brake.
About this question
Topic: Passenger vehicles License: CDL
Part of these practice sets:
Where it applies: Asked in every state.
Practice the whole set
This question is part of On the Road with Passengers (20 questions). Take the full set and check your score.
Practice On the Road with PassengersMore questions from On the Road with Passengers
- Which of these are frequent reasons that bus passengers get hurt?
- Is the location important when you make a disruptive rider leave the bus?
- When a coach bus passes a weigh station in the U.S., is it required to pull in?
- On an urban transit bus, what does the brake and accelerator interlock do?
- If you must make a disruptive passenger get off the bus, where should you do it?
- A rider is causing trouble and has to be removed from the bus. Where should you let that person off?
- A transit bus has a rear-door brake interlock. Do you need the rear door open before you can set the parking brake?
- Which habit is recommended while you are driving a bus?
Practice on your phone.
Practice here in your browser, or use the app with the same questions and explanations. It's free on the App Store.