animals prohibited appropriate behavior appropriate behaviour bicycles prohibited black black and white communicating communication denial denied dog informing littering prohibited no animals no bicycles no littering not allowed not permitted permission denied prohibited prohibition prohibitions rules sign warning white bicycle blue car command cycle entrance entry exit highway instruction no entry pole post red road rule sky access-denied access-limited advice alert appropriate-behavior appropriate-behaviour ban banned be-careful beware bicycles-prohibited bylaws concern cycling-prohibited danger dangerous directions information law legal no-bikes no-cycling no-wheels not-allowed not-permitted pedestrian-care pedestrian-safety permission-denied restricted restriction restrictions risk risks safety signs symbol warning-sign watch watch-out announcement parking rollerskates-prohibited skateboards-prohibited allow allowed bicycles bike bikes roadsign roadsigns against circle drive illegal mandatory pictogram prohibit ride stop warn wheels air ballons balloon clouds colorful colors colourful colours float fly hover peace peaceful relaxing skies soar