What's the maximum speed at which you can drive a passenger car on a road marked with this sign?

Why?

The D-43 sign showing crossed-out buildings marks the end of a built-up area. On the single-carriageway, two-way road shown, a passenger car may travel at up to 90 km/h unless other signs impose a lower limit. Both 100 and 110 km/h exceed the limit for this type of road.

art. 20 ust. 3 pkt 1 lit. d Prawa o ruchu drogowym; znak D-43 „koniec obszaru zabudowanego”