Are you warned in this situation of a considerable road elevation?

Why?

The A-23 steep ascent sign warns that the road climbs sharply ahead. The plate marked “10%” indicates the gradient, while the separate “40” sign below sets the speed limit.

§ 9 ust. 5 rozporządzenia w sprawie znaków i sygnałów drogowych, znaki A-23 i T-9