but very often there is no clear indication that the speed limit is over.
But...the junction makes that clear. It's actually good, because it means less sign clutter.
. It shouldn't be up to the motorist to guess whether this last shed is part of the village or not.. Why can't Poland just have end of speed limit signs like in other European countries?
But they do - the city sign with the line through it makes it clear. The same sort of sign is used all over Europe.