Practice question

What does a brake-door interlock do on an urban mass transit coach?

  1. Applies the brakes and holds the throttle in idle when the rear door is open
  2. Raises the roof hatch automatically
  3. Turns the bus into a school bus
  4. Allows baggage to be stored in the aisle

Answer: A — Applies the brakes and holds the throttle in idle when the rear door is open

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