Ключевые слова: approaching, asia, coach, commute, crossing, departing, diesel, engine, express, goa, holiday, icf, india, indian, irctc, journey, locomotive, motion, new, opposite, parallel, passenger, passing, rail, railroad, railway, railways, relative velocity, reservation, running, safety, same direction, signalling, sleeper class, slow moving, special, speeding, tatkal, traffic, train, transit, transport, transportation, travel, travelling, travelogue, two, wdp, wdp4d, window side,