advice alert announcement appropriate-behavior appropriate-behaviour avoid be-careful beware black care caution communicating communication concern danger dangerous deep denied directions health information informing not-allowed not-permitted permission-denied polluted pollution prohibited prohibition protect protection red risk risks risky rules safety sign signs toxic toxicity unhealthy warning warning-sign water water-pollution water-toxicity weathered white contaminated contamination careful crossing double-lines island lookout observant pedestrians reflective refuge road road-sign security share sharing small-traffic-island traffic traffic-flow traffic-island walk walkers walking watch watch-out yellow access-denied access-limited ban banned bylaws law legal motorbikes-prohibited no-wheels pedestrian-care pedestrian-safety prohibitions restricted restriction restrictions symbol bicycles-prohibited cars cautious conditions large-vehicles look-out road-conditions road-train rural-area semi-trailers signage slow-down speed speed-reduction text trailers transport transportation trucking trucks vehicles words assistance buoyancy circle circular flotation-device kisby-ring lettering life-preserver life-saving-buoy lifebelt lifebuoy lifering lifesaver message no-lifeguard perry-buoy personal-protective-equipment pool rescue-aid rescue-device ring-buoy safety-device swim swimming swimming-pool parking rollerskates-prohibited skateboards-prohibited cycling-prohibited no-bikes no-cycling