Last time I looked, all road signs were in ENGLISH. NOT any other language. Makes me ill to think about what happens on our roads with these loonies.
Signs in the U.S. are definitely in English. Drivers here should be able to read them. When you drive in a place like Belgium, you need to be prepared in French, German and Dutch. Traveling from Brussels to Mons you have to be prepared to see Mons called "Bergen" in the German area. The signs approaching a hairpin curve in Wales say, "Arafwch Nawr!". Translated that is "Slow now!". If you don't comprehend it, you may well run off the road and down a steep ravine.