Ключевые слова: black, british, city, city life, commute, concept, england, europe, everyday life, gap, golders green, line, london, london underground, metro, mind the gap, open air, outdoor, outside, platform, public, public transport, rail, railroad, railway, safety, sign, station, subway, tourism, track, train, train platform, transport, transportation, travel, tube, uk, underground, urban, warning,