Ключевые слова: art, banner, business, carriage, cartoon, computer, construction, contour, coupler, delivery, design, diesel, direction, drawing, energy, engine, heavy, illustration, isolated, line, locomotive, main, modern, paper, passenger, powerful, pull, railroad, rails, railway, silhouette, sleepers, speed, stroke, strong, technology, track, traction, tractor, train, transport, transportation, travel, tree, ways,