If a wheel slip occurs in a tram during start-up, you must stop, and then:

This question is about wheel slip that occurs when a tram is moving off. After interrupting the start-up, you should repeat it more gently - the answer is A.

Wheel slip when moving off means that the driving force is greater than the grip of the wheels on the rails allows - the wheels spin on the spot. After interrupting the start-up, you move off again with the master controller in a lower position, and on slippery rails you can use the sander. A more vigorous start-up (answer B) would only make the slip worse, damaging the wheels and the rails. Stopping the tram (answer C) is not necessary, because wheel slip during start-up can usually be controlled by calmly repeating the start. Moving off gently is also more comfortable for passengers.

Legal basis: Art. 3 para. 1 of the Road Traffic Act (Prawo o ruchu drogowym)