At what speed can you ride a motorcycle on a dual carriage express road?

In the photo you are riding in fog on a dual carriageway separated from the opposite direction by a concrete barrier; on the right there is sign D-7 "expressway". Of the speeds given, the only one at which you may ride a motorcycle on a dual-carriageway expressway is 105 km/h - answer A.

The Road Traffic Act states that the speed limit for a motorcycle outside a built-up area on a dual-carriageway expressway is 120 km/h. Of the three answers, only 105 km/h is within this limit - 125 and 145 km/h already exceed it. It is worth remembering the ladder: motorway 140, dual-carriageway expressway 120, single-carriageway expressway and a dual carriageway with at least two lanes in each direction 100, other roads 90 km/h. The limit is a maximum, not an obligation: in the photo visibility is limited by fog, so the Act requires you to adjust your speed to the conditions, and in such a situation even 105 km/h may be too much. For a motorcyclist, fog also means a wet, slippery surface and limited visibility through the helmet visor.

Legal basis: Art. 20 para. 3 point 1 letter b and Art. 19 para. 1 of the Road Traffic Act (Prawo o ruchu drogowym); § 48 para. 1 of the Regulation on road signs and signals