What should you do to release (loosen) the parking brakes for towing a damaged tram?
Show the correct answer
Correct answer
B. Mechanically or electrically unfasten the brake release.
Explanation
This question is about preparing a broken-down tram for towing. To release the parking brakes, you must unfasten the brake release devices (luzowniki) mechanically or electrically - the answer is B.
The parking brake of a tram is applied by a spring and also works after the tram car is switched off - this protects the vehicle from rolling away. Switching off the tram car (answer A) will therefore not release the brakes, but will keep them on. The reverser in the neutral position (answer C) disconnects the drive, but has no effect on the parking brake. For towing, you must unfasten the brake release devices - mechanically or electrically - following the instructions for the particular type of tram. Towing with the brakes applied would destroy the linings and the wheels.
Legal basis: Art. 66 para. 1 point 1 of the Road Traffic Act (Prawo o ruchu drogowym)