blue coming give left pole post posts red right sign signpost signposts signs sky sundtraffic to traffic warning way yellow ahead narrow narrowing road steel wide width city crossing man pedestrian plain roads roadsign roadsigns street townurban walk zebra chinese clever knowledge letter mandatory nonsence rule rules stop stopped strange ting understand understandable alert back ban banned caution entry exit go no plate prohibited transport auto bus buses busses car minibus prohibitory pylon transportation travel access denied denied no standing no temporary parking not allowed not permitted permission denied prohibition building decay haunted notices private prohibit property restrictions signage spooky trespass trespassing wall window Africa animal bumps camel circle desert 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 nuclear pictogram pollution protest radiation woman