Ключевые слова: back lit, boulevard, bulgaria, busiest, by cars, capital, car, city, city life, city street, contemporary, danger, downtown district, eu, gas, gasoline, headlight, lane highway, large group of objects, life, main street, moving past, night, nightlife, oil, people, polluted air, pollution, prices, road, routine, rush hour, skyline, sofia, street, sunset, traffic, traffic jam, traveling, urban scene, work, working people,