advice alert announcement assistance be-careful beware black buoyancy care caution circle circular communicating communication danger flotation-device information informing kisby-ring lettering life-preserver life-saving-buoy lifebelt lifebuoy lifering lifesaver message no-lifeguard perry-buoy personal-protective-equipment pool red rescue-aid rescue-device ring-buoy risk risks risky safety safety-device sign signage swim swimming swimming-pool warning warning-sign water white access-denied access-limited appropriate-behavior appropriate-behaviour ban banned bicycles-prohibited bylaws concern dangerous denied directions law legal no-wheels not-allowed not-permitted parking pedestrian-care pedestrian-safety permission-denied prohibited prohibition prohibitions restricted restriction restrictions rollerskates-prohibited rules signs skateboards-prohibited watch watch-out advising authorised-entry-only authorized-entry-only behave behavior behaviour communicate construction construction-site entry-denied entry-prohibited limited-access no-access no-entry unauthorised unauthorized cycling-prohibited no-bikes no-cycling symbol ancient animal big carnivore creature dino dinosaur extinct free jurassic lizard model monster natural nature reptile science t_rex wild wildlife woodland woods