Check these out!!
Boyne Falls, Michigan, U.S. 131 - Do not pass while opposing traffic present.
Highway 26, Idaho Falls, Idaho - Warning to tourists: don't laugh at the natives.
Rim Drive, Durango, CO - Warning: Do Not Hit This Sign
Unknown Road, Clemson, SC - Caution water on road during rain.
Sheriff's Dept., Warrden County, IN - At entrance to jail a sign reads, "No weapons beyond this point". Message is also written in brail underneath.