Ключевые слова: asia, asian, background, boarding, business, car, city, commute, crowd, crowded, female, going, indoor, inside, interior, light, line, lrt, mass, metro, metropolitan, modern, mrt, passenger, passengers, people, public, rail, railroad, railway, rapid, singapore, southeast, station, subway, system, technology, tourism, tourist, track, train, transit, transport, transportation, travel, underground, urban, vagon, work,