In what situation can the tram driver safely drive through the rail switch?
Show the correct answer
Correct answer
C. When the switch points properly cling.
Explanation
This question is about passing safely over points (switch). The tram driver can safely pass over the points when the switch blades fit properly - the answer is C.
The switch blades guide the tram's wheels onto the correct track. If a switch blade does not fit properly against the stock rail, the wheel flange may enter the gap between them or ride up onto the switch blade - this creates a risk of the bogie splitting onto two tracks and of derailment. The points indicator (answer A) shows that the points have been moved, but it does not always guarantee that the switch blades fit properly - the tram driver checks them visually. Running behind schedule (answer B) never justifies driving without checking the points. Points are passed over at low speed.
Legal basis: Art. 3 para. 1 of the Road Traffic Act (Prawo o ruchu drogowym)