What is the purpose of using a parking brake in a bus?
Show the correct answer
Correct answer
B. To immobilize a vehicle at a bus stop.
Explanation
In the photo passengers are getting on and off a city bus at a stop. The bus stop brake is used to keep the vehicle at a standstill at a stop - answer B.
The Road Traffic Act requires a vehicle to be built and maintained so that using it does not endanger the safety of the people travelling in it. The bus stop brake usually engages automatically when the doors open and holds the bus in place while passengers get on and off - the bus will not move off even if the driver presses the accelerator by accident. It is not used for stopping the vehicle while driving in an emergency (answer A) - that is what the service brake is for. It is also not meant for keeping the bus at a standstill during longer parking (answer C) - then you apply the parking brake and switch off the engine.
Legal basis: Art. 66 para. 1 point 1 and 5 of the Road Traffic Act (Prawo o ruchu drogowym)