color correct error exclamation graphic green hand handwriting incorrect mark mistake no opposite quiz red text word written wrong yes black black on white direction law no alternative one way one way signs only sign signs specific street signs white blue left not pole posts prohibition road signpost signposts sky steel stop sundtraffic traffic turn yellow go human man walk walking lorry post truck vehicle computer monitor different humorous keyboard Letterbox letterbox slot mail mail in monitor no email postage snail-mail unusual weathered acceptable access-denied access-limited advice advising alert allocated allocation approved authorised authorized automobiles behave carpark cars communicate communication denied directions directive entry-denied entry-prohibited information informing limited limited-parking motor-cars no-access no-entry not-allowed not-permitted parking permission-denied prohibited restricted restriction restrictions safety special-parking unauthorised unauthorized vehicles vistors warning Alley Beirut block crack cracked dead dead-end end impasse Lebanon out paint peeling street wall way brasil Brasília car céu forbidden no parking park plate Proibido rua sinal transit tráfego trânsito vermelho