Interstate 10 near Phoenix AZ... State Prison: do not stop for hitchhikers
Highway 26, Idaho Falls, Idaho... Warning to tourists: don't laugh at the natives
Sherriff's Dept. Warden County, IN.... at entrance to jail a sign reads, "No weapons beyond this point." Message is also written in brail underneath.
Various parts of Jamaica... In Jamaica, they call speedbumps "sleeping policemen," so in some parts of the island, there are signs that read, "Warning! Sleeping Policemen Ahead."
Clemson, SC... caution: water on road during rain
Street in Savannah, GA.... street closed to traffic when flooded
Smokey Mountain National Park, Tennessee... If tunnel is dark, remove sunglasses
University of North Texas Cafeteria.... do not place buttered bread in the toasters!
Interstate 44 into Oklahoma... Do not drive into smoke
Central Oregon Highways... Do not pass snowplows on the right
Freeway near San Diego, CA.... Cruise ships use airport exit
South Side of San Antonio, TX.... Cemetery Road. Dead End.
Gas Pump.... sign reads: Please prepay in advance