Ключевые слова: arrow, arrow sign, background, caution, communication, concept, danger, dangerous, direction, door, doorway, emergency, emergency exit, emergency sign, emgency, escape, exit, exit sign, fire, fire exit, guidance, icon, information, leave, light, passage, picture, protection, rescue, running, safe, safety, security, security system, show, sign, signboard, signs, suggestion, symbol, urgency, warning, way, way out, yellow light, yellowboard,