How should you start-up a tram.
Show the correct answer
Correct answer
A. In a manner that prevents the wheels from skidding.
Explanation
This question is about moving off correctly with a tram. The start-up should be carried out in a way that does not cause wheel slip - the answer is A.
When the wheels slip, the tram moves off more slowly, and the wheel tyres and the rails wear out quickly. That is why you adjust acceleration to the grip: on dry rails you can move off more briskly, on wet, icy or leaf-covered rails - more gently, using the sander if necessary. Strong acceleration (answer B) creates a risk of wheel slip and of standing passengers falling over. The batteries (answer C) supply the low-voltage circuits, and the traction motors take current from the overhead line, so the load on the batteries is not the point here.
Legal basis: Art. 3 para. 1 of the Road Traffic Act (Prawo o ruchu drogowym)