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

In the photo on the right there is a white board with a black silhouette of a town crossed out with a red line - sign D-43 "end of built-up area". It means leaving a built-up area. The answer is: yes.

The Regulation on road signs and signals states that D-43 means leaving a built-up area, and D-42 - the same symbol without the red line - means entering such an area. After sign D-43 the 50 km/h limit for built-up areas stops applying and the limit for roads outside built-up areas begins, unless sign B-33 says otherwise. Do not confuse it with E-18a "end of town" on a green background - that sign only gives the name of the town and does not change the speed limit.

Legal basis: § 58 para. 3 of the Regulation on road signs and signals; Art. 20 para. 1 and 3 of the Road Traffic Act (Prawo o ruchu drogowym)