advice alert announcement appropriate-behavior appropriate-behaviour be-careful beware black blue care careful cars caution communicating communication concern directions informing lookout monitored monitoring noted observant observed risk risks safety sign signs site-regulations speed vehicles warning warning-sign watch watch-out white danger dangerous looking rail railway railway-station railway-tracks red trains go green light lights listen Look 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 slow-down speed-bump speed-hump rails railway-crossing