Ключевые слова: architecture, clean, clear, commute, coronavirus, covid19, empty, europe, illustration, indoor, infection, infrastructure, interior, line, m2 lines, mobility, modern, motion, network, pandemic, passing, perspective, platforms, poland, prince janusz, public, quarantine, quarantined, railroad, railway, red station, second, second line, siemens inspiro, station, subway, train, traincar, trainset, transport, transportation, travel, underground, university, urban, virus, warsaw, warsaw metro,