Ключевые слова: advertisements, advice, britain, capital, carriage, city, commute, commuters, coronavirus, coverings, covid19, displays, england, europe, face, government, interior, journey, london, london underground, mask, mask wearing, measures, metro, notice, pandemic, people, public, restrictions, rules, safe, safety, signage, signs, social distancing, subway, tfl, train, transport, transportation, travel, tube, uk, urban,