Ключевые слова: acoustic, automotive, barrier, black, clouds, community, construction, control, day, design, engineering, environment, fence, freeway, highway, infrastructure, landscape, lines, long, metal, mitigation, modern, mountain, nature, neighborhood, noise, noise barrier, outdoors, perspective, pollution, protect, reduction, road, roadside, rural, safety, security, sky, sound, summer, technology, traffic, transportation, travel, urban,