Ключевые слова: adult, alone, business, caucasian, commuter, contemplation, day, elderly, face, gray, horizontal, indoors, inside, interior, journey, light, loneliness, lonely, looking, male, mature, men, metro, motion, old, one, out, passenger, people, person, photo, railroad, reflection, sad, seat, senior, tourist, train, transport, transportation, travel, traveler, vehicle,