Why are you required to stop now?

In this situation, you are required to stop because of the tram. According to German traffic regulations, trams have special priority at intersections unless traffic signs state otherwise. If a tram is crossing your path and you would endanger or hinder it, you must stop and let the tram go first. Neither the cyclist nor the white car has priority over you in this case, so your focus should be on yielding to the tram. Recognizing when trams have right of way is important for safe and lawful driving in Germany, especially at intersections or where tram tracks cross the road.