auto bus buses busses car mandatory minibus post prohibitory pylon road roadsign roadsigns sign signs traffic transport transportation travel warning access denied denied no standing no temporary parking not allowed not permitted permission denied prohibited prohibition building decay haunted notices private prohibit property restrictions rules signage spooky trespass trespassing wall window Africa animal ban banned bumps camel circle desert red wild appearance danger flag Flags jolly-roger pirate-flag pirates skull-and-crossed-bones symbol symbolic traditional atom atomic beware Bin color colour garbage icon man nuclear pictogram pollution protest radiation stop woman against letter mail mails many spam spammed