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 access-denied access-limited ban banned bylaws law legal motorbikes-prohibited no-wheels pedestrian-care pedestrian-safety prohibitions restricted restriction restrictions symbol watch watch-out bicycles-prohibited advising animal canine canine-guard communicate dog guard-dog lettering letters lookout mammal message no-entry observe security warned wording words assistance buoyancy circle circular flotation-device kisby-ring life-preserver life-saving-buoy lifebelt lifebuoy lifering lifesaver no-lifeguard perry-buoy personal-protective-equipment pool rescue-aid rescue-device ring-buoy safety-device signage swim swimming swimming-pool parking rollerskates-prohibited skateboards-prohibited cycling-prohibited no-bikes no-cycling