Ключевые слова: city, darkness, dawn, dusk, electric, illumination, infrastructure, lamp, light source, lighting, metropolis, modern, night, nocturnal, pathway, pole, public lighting, road, road network, roadscape, safety, sidewalk, street scenery, streetlamp, traffic, transportation, urban, urban design, urban development, urban environment, urban landscape, urban life, urban planning, urban walkway, urbanization, visibility,