Ключевые слова: acoustic, along, aluminum, ballast, barrier, built, construction, conveyance, corrugated, day, defence, engineering, exterior, fence, groove, grooved, heavy, industrial, industry, infrastructure, iron, line, long, material, measurement, metal, metallic, modern, new, noise, protection, protective, rail, railroad, railway, road, sleeper, sound, station, steel, structure, track, train, transport, wall, way,