advice appropriate-behavior appropriate-behaviour be-careful blue care careful caution communicating communication conditions directions informing Look looking lookout safety sign signs white appropriate behavior appropriate behaviour be careful handicap pictogram reserved wheelchair alert announcement beware brown car cars danger drivers observant observe pedestrians security vehicles warning watch watch out black watch-out yellow red boom boomgate information road road-users blocked blocked-path detour directing direction go-around animal animals aware awareness boards informative observance observe regulations rough rules rustic visitors wood wooden camel camels drive driving mammal reflective cycling cyclists disability disabled path pathways risk risks share sharing track walk walkers walking