I’ve noticed this on Polish vs Czech roads (I’ve driven mostly in the mountains border regions of Czechia so this maybe local). Polish roads have gazillion of signs and usually you’ll see a lower speed limit sign just before the curve or a bend if it’s not supposed to be driven at the speed limit of the main road. In my opinion there are way too many signs and I feel—as another poster commented here—like a robot. On the other hand in Czechia on a small mountain road there’s a general limit say 90kmh or 70kmh and there’s no way you make the bends with that speed— it’s your responsibility to slow down.

I’ve seen a similar differences in another border regions, e.g. Switzerland-France or France-Germany. It almost seems like there are two schools of thoughts that different countries subscribe to.