In this situation, should you stop before the signalling device?

In the video you are approaching a junction under a flyover in town; the traffic lights above and beside the roadway show a green signal, a black car is driving through in front of you, on the right there is D-1 with D-6b "pedestrian crossing and cycle crossing" below it, and a pedestrian is standing on the pavement by the crossing. You should not stop before the traffic lights. The answer is: no.

The Regulation on road signs and signals states that a green signal shown by traffic lights S-1 means permission to enter beyond the traffic lights; the only cases in which it does not permit entry are when the vehicle's movement would make it difficult for pedestrians or cyclists to leave the roadway, or when, because of traffic conditions, it would not be possible to leave the junction before the green signal ends. None of these situations applies here: the pedestrian is standing on the pavement and is not stepping onto the crossing, and there is space beyond the junction, so you drive through without stopping. Stopping at green for no reason would be a mistake, because the driver behind you does not expect it. When the traffic lights are working, entry is decided by the signals, not by sign D-1. As you enter, you watch the pedestrian crossing and the vehicles at the junction and keep a distance from the black car in front of you.

Legal basis: § 95 para. 1 point 1 and para. 2 of the Regulation on road signs and signals; Art. 5 para. 3 of the Road Traffic Act (Prawo o ruchu drogowym)