Ключевые слова: australia, australian, carriage, city, commuter, coronavirus, covid, covid19, distance, empty, information, inside, interior, lifestyle, new south wales, nsw, pandemic, passenger, people, prevention, preventive, protection, public, public transport, railroad, railway, seat, seats, sign, sit here, social, social distancing, space, spread, state, station, sticker, sydney, sydney trains, train, transit, transport, transportation, travel, trip, urban, virus, wait, warning,