Before you mock weltweit too much, there is something different about the way one navigates in France. It's all about place names, not road numbers.
The road numbering there is administrative and inconsistent. However the routing signs within a settlement
always have the next major settlements. With a sprinkling of 'Autres Directions' where a given exit will get you everywhere apart from the places named on the signs. It works surprisingly well. Visiting a friend recently, I asked directions from Paris.
Quite simply, he wrote: Chartres--Le Mans--Rennes--Baud.
And that was all I needed for a 300 mile journey cross country. In the UK we'd give road numbers (intermingled with place names, where pertinent).
So place name signs are navigational not decorative. There's no twee fonts of random sizes, commercial sponsor names or other guff. They are in the same fonts and sizes as other navigational signs. Having an 'exit' sign becomes part of that navigation.
I didn't realise any of this until I had to drive there a few months ago - it really is different.
So yeah, Weltweit, I know where you're coming from with this.