In this scenario, as you approach the crest of the hill on a two-way road, are you permitted to overtake the motorbike?

In the photo you are driving on a two-way roadway outside a built-up area and approaching the crest of a hill; a motorcycle is in front of you, and the road beyond the crest cannot be seen. In this situation you must not overtake the motorcycle. The answer is: no.

The Road Traffic Act prohibits overtaking a power-driven vehicle travelling on the roadway when approaching the crest of a hill; on a two-way roadway the exception applies only to a section with marked lanes and only on condition that the driver does not enter the part of the roadway intended for traffic in the opposite direction where road markings prohibit this. There are no lines at all on this road, so the lanes are not marked and the exception does not apply; a motorcycle is a power-driven vehicle, and by overtaking it you would be driving on the left half of the roadway at a place where you cannot see over the crest whether anyone is coming. In addition, a distance of at least 1 m from the motorcycle being overtaken is required. A head-on collision beyond the crest of a hill is one of the most common fatal scenarios on the roads. You stay behind the motorcycle and overtake only beyond the crest, on a straight section with good visibility.

Legal basis: Art. 24 para. 7 point 1, para. 8 point 2 and para. 2 of the Road Traffic Act (Prawo o ruchu drogowym)