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

Why?

The green sign with the crossed-out place name is E-18a, marking the end of a locality. It indicates that you are leaving the locality, not that the built-up area has ended. The end of a built-up area is marked by D-43, which shows a crossed-out silhouette of buildings on a white background.

E-18a „koniec miejscowości”; D-43 „koniec obszaru zabudowanego”