Ключевые слова: abstract, arrow, background, black, building, business, concept, construction, corridor, danger, dangerous, dark, design, direction, directional, door, doorway, emergency, entrance, escape, evacuation, exit, fire, guidance, help, horizontal, hotel, icon, illuminated, isolated, leave, light, lighted, night, nobody, office, pattern, red, route, safe, safety, school, secure, security, sign, signage, symbol, technology, wall, white,