Ключевые слова: background, communication, country, day, direction, dual, dusk, form, gravel, horizon, indiana, industry, infrastructure, iron, light, line, lines, outdoor, pair, parallel, parallel lines, perspective, rail, rail line, railroad, railroad ties, railroad tracks, rails, railway, railway tracks, red, road, rocks, rural, rust, rusty, scenic, semaphore, shipping, siding, sky, spikes, steel, straight, sundown, ties, track, tracks, train, train tracks, transit, transport, transportation, trees, trestle, twin, two, vanishing point, vegetation, voyage, way, white,