Does this sign indicate the beginning of a built-up area?

Why?

The white sign with a black silhouette of buildings is D-42, marking the start of a built-up area. The rules for built-up areas apply from this point, even though fields are still visible beside the road.

§ 58 ust. 3 rozporządzenia w sprawie znaków i sygnałów drogowych, znak D-42