On the presented road, does the sign prohibiting overtaking cease to apply at the end of the bend?

In the photo, you are driving along a road through fields and approaching a bend; on the right there are signs A-1 "dangerous right bend" and, below it, B-25 "no overtaking", and there are cars driving in front of you. The sign prohibiting overtaking does not stop applying at the end of the bend. The answer is: no.

The Regulation on road signs and signals states that sign B-25 "no overtaking" prohibits drivers of power-driven vehicles from overtaking multi-track power-driven vehicles, and if the ban is not cancelled earlier by a sign marking the end of the ban, it applies until the nearest junction. The end of the bend is neither a cancellation nor a junction - after you leave the curve, the ban continues until sign B-27 "end of no overtaking", B-42 "end of prohibitions" or until a junction. Drivers often confuse this with the ban in the Road Traffic Act on overtaking on a bend marked with warning signs, which really does end together with the bend; here, however, there is also sign B-25, and it follows its own rules. The ban from B-25 does not cover overtaking two-wheelers, for example motorcycles and bicycles, but when you overtake them, you still need visibility and space.

Legal basis: § 23 para. 1 and § 32 para. 1 and 2 of the Regulation on road signs and signals; Art. 24 para. 7 point 2 of the Road Traffic Act (Prawo o ruchu drogowym)