advice alert appropriate-behavior appropriate-behaviour area assemble assembling Assembly communicating communication direction emergency evacuate evacuation gathering green meeting meeting-place message outdoors outside people place point safety security sign staff white workers environment expectorate expectorating health health-risk historic-sign no-spitting not-allowed not-permitted old permission-denied pollution prohibited prohibition railway-platform spit spitting unhealthy warning appropriate behavior appropriate behaviour assistance black care concern danger dangerous directions emergencies emergency action first aid help jellyfish jellyfish stings protect protection signs stingers stings warning sign yellow animal announcement careful caution control dog dogs informing lead leash pet pets restrain restrained restricted restriction rules advising back communicate dead-end information lettering path pathway red turn turn-around turn-back u-turn wording denied law legalities not allowed not permitted permission denied black and white children denial dogs-prohibited kids playground avoid bright blue dangers no-diving risk risks risky shallow swimmers swimming water wet