Should you take into account that the cyclist may emerge from behind the tram in this situation?

In the photo there is a tram standing on the left, and in front of you there is a pedestrian crossing and a cycle crossing marked with sign D-6b; on the right there are pedestrians walking. The tram hides the left part of the cycle crossing from you, so you must be ready for a cyclist to come out from behind it. The answer is: yes.

The Road Traffic Act requires a driver approaching a cycle crossing to exercise particular caution and to give way to a cyclist on the crossing; the principle of limited trust (zasada ograniczonego zaufania) requires you to predict how others will behave when the circumstances suggest it. A hidden cycle crossing is such a circumstance: you slow down to a speed at which you can stop immediately if someone comes out from behind the tram.

Legal basis: Art. 27 para. 1 and Art. 4 of the Road Traffic Act (Prawo o ruchu drogowym); § 47 para. 3 of the Regulation on road signs and signals