Ключевые слова: abstract, aircraft, airport, alarm, alert, ambulance, attention, background, beacon, bell, blue, building, bulb, car, center, control, danger, department, detector, elevator, emergency, equipment, escape, evacuation, exit, extinguisher, fire, green, help, home, industry, insurance, isolated, lamp, light, police, protection, red, rescue, safety, security, sign, signal, siren, symbol, traffic, urgency, warn, warning, white,