Practice question

What is the correct role of a brake-door interlock on an urban transit coach?

It applies brakes and holds the throttle at idle when the rear door is open, but it is not a substitute for the parking brake
It replaces all normal braking whenever passengers board
It allows the driver to leave the seat without securing the bus
It is used to steer the bus at low speed

Answer: A — It applies brakes and holds the throttle at idle when the rear door is open, but it is not a substitute for the parking brake

The correct answer is shown above. Try the full quiz for additional practice.