advice alert announcement appropriate-behavior appropriate-behaviour be-careful beware black care careful caution communicating communication concern danger dangerous directions informing Look looking lookout observant red risk risks safety sign signs slow slow-down traffic vehicles warning warning-sign watch watch-out white blue cars monitored monitoring noted observed site-regulations speed rail railway railway-station railway-tracks trains go green light lights listen pedestrian pedestrians trams authorisation authorised authorization avoid flammable gas gaseous no-ignition outlet potential risky stay-clear vapour vapours warned conditions garden garden-beds keep-out not-allowed not-permitted planter-beds prohibited prohibition watch-your-step animal-crossing animal-priority animals cautious crossing distance mammal not=too-close observe otter otters restricted restriction restrictions security wildlife banned rain rain-drops wet direction footpath information pathway walk walkers walking yellow bread communicate directive feed feeding fish fish-feeding food inform message no-extras signage potential-vehicle-damage road road-surface speed-bump speed-hump