acceptable advice advising allocated allocation appropriate-behavior appropriate-behaviour approved blue communicating communication directing direction directional indication indicator letter lettering off-road parking parking-bay public pullover roadside sign signs symbol symbols alert area assemble assembling Assembly emergency evacuate evacuation gathering green meeting meeting-place message outdoors outside people place point safety security 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 stingers stings warning sign yellow animal announcement careful caution control dog dogs informing lead leash pet pets restrain restrained restricted restriction rules back communicate dead-end information 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