In this scenario, are you permitted to overtake the bicycle?

In the video, you are driving across a bridge; on the right, in a cycle lane marked with road marking P-23, there is a cyclist, and next to the roadway there is sign B-25 "no overtaking". Despite this sign, you are allowed to overtake the bicycle. The answer is: yes.

The Regulation on road signs and signals states that sign B-25 "no overtaking" prohibits drivers of power-driven vehicles from overtaking power-driven multi-track vehicles. A bicycle is not a power-driven vehicle - the Road Traffic Act expressly excludes it from this definition - nor is it a multi-track vehicle, so sign B-25 does not apply to overtaking a bicycle; similarly, it does not prohibit overtaking a motorcycle or a moped. So you may go past the cyclist, but under the general rules: before the manoeuvre you make sure that you have visibility and space, and the distance from the bicycle being overtaken may not be less than 1 m. On the bridge, the cyclist is riding in their own cycle lane, so it is usually enough to stay in your lane without getting close to the line; however, if keeping a metre would require entering the lane for the opposite direction, you check that nothing is coming from the opposite direction, and if there is a double solid line, you wait.

Legal basis: § 23 para. 1 and § 91 para. 2 of the Regulation on road signs and signals; Art. 2 point 32 and Art. 24 para. 2 of the Road Traffic Act (Prawo o ruchu drogowym)