In the presented situation, are you allowed to drive straight through the intersection?

In the video you are driving along a narrow street in a town and approaching a junction; on the right there is sign A-7 "give way", and under it a blue sign C-4 "turn left after the sign"; straight ahead, on the other side of the junction, you can see sign B-2 "no entry". You must not go straight on through the junction. The answer is: no.

The Regulation on road signs and signals states that mandatory signs from C-1 to C-11 require the driver to travel in the direction shown by the arrows and apply at the nearest junction; C-4 requires you to turn left after the sign, so going straight on or turning right is ruled out. This is confirmed by sign B-2, which means that vehicles are not allowed to enter the road from the side where the sign is placed - the street straight ahead is one-way and leads towards you, so if you entered it, you would be driving against the flow of traffic. Sign A-7 adds that the intersecting road has right of way: before turning left you slow down or stop, give way to vehicles coming from the left and from the right, and only then do you turn, having first moved towards the middle of the roadway and signalled the manoeuvre with your indicator.

Legal basis: § 35 para. 1 and 2, § 17 para. 1 and § 5 para. 5 of the Regulation on road signs and signals; Art. 22 para. 2 point 2 and para. 5 of the Road Traffic Act (Prawo o ruchu drogowym)