Icelandic sign:
" Blindhaed: In Iceland, there are plenty of hilly roads where you can't quite see cars approaching you due to the incline. In this case, you will want to look out for the sign labeled, "Blindhaed." Meaning, "blind rise," this indicates you are on a road where you might want to stay completely in your lane and slow down if you can't see cars coming at you." (More signs)