We used to have signs like that around here. Apparently they were a challenge to the reading comprehension impaired. They've slowly been changed to "bridge may be icy".

I think goats do pretty well on ice. Camels obviously have no clue it even exists.

Winter driving 101: something somewhere is gonna be a lot slicker than you think it is. Somebody somewhere is gonna be driving like a complete idiot, often in a minivan.