Ключевые слова: architecture and buildings, arrow sign, assistance, black, bright, dark, direction, directional sign, door, doorway, electric light, emergency exit, emergency services, emergency sign, escape, europe, exit sign, fire escape, fire exit sign, frame, green, guidance, illuminated, indoors, industry, information sign, leaving, light, lighting equipment, luminosity, mounted, moving down, moving toward, night, protection, rectangle, running, safety, security, service, sign, symbol, urgency, vibrant color, wall, white,