2 ptsD,D1Official number: 6861
For what purpose will you use a parking brake?
Explanation
Correct answer: To reduce a demand for compressed air during stops at the bus stop.
The bus stop brake, whose switch may be marked with the '(P)' symbol shown in the picture, is used to immobilise the vehicle while stopped at a bus stop. Its activation allows the driver to release the service brake pedal, which prevents the continuous use of compressed air from the bus's braking system and ensures a safe stop.