Ключевые слова: abstract, background, barricade, barrier, closeup, construction, danger, dangerous, design, direction, fence, grass, highway, industrial, material, metal, metallic, nobody, object, old, one, outdoor, pattern, rectangle, road, roadside, roadsign, rough, safety, security, sign, sky, spot, steel, street, striped, style, surface, symbol, texture, traffic, transportation, wall, warning, way, white,