If you ride a single-track motorcycle, can you use the lane designated for bicycles?

In the photo you are riding along a wide street in a town; a lane with a painted bicycle symbol P-23 has been marked out along the right-hand edge, and on the right-hand side there is sign F-19 showing who the individual lanes are for. When riding a single-track motorcycle, you may not use a cycle lane - answer C.

The Road Traffic Act defines a cycle lane as a part of the roadway intended for bicycle traffic, and the Regulation on road signs and signals states that road marking P-23 "bicycle" indicates, among other things, a cycle lane, while F-19 shows a lane intended for the vehicles shown on the sign. A motorcycle is not a bicycle - it has an engine and a completely different mass and speed - so it must not use this lane. Answers A and B invent conditions (up to the nearest junction, with particular caution) that do not exist in the regulations: the ban is absolute. The point is the safety of cyclists, who do not expect a vehicle travelling at 50 km/h in their lane. Note the exception in the other direction: entering a cycle lane in order to cross it when turning right is not using the lane, but it requires you to give way to a cyclist going straight on.

Legal basis: Art. 2 point 5a and Art. 27 para. 1a of the Road Traffic Act (Prawo o ruchu drogowym); § 91 para. 2 and § 75 para. 4 of the Regulation on road signs and signals