Ключевые слова: accessibility, background, barrier, black, bollard, boundary, chain, city, closed, column, concrete, construction, control, curb, curve, dividing, edge, enclosure, exterior, fence, forbidden, gray, hanging, horizontal, iron, kerb, metal, nobody, outdoors, pole, post, protection, road, roadside, safety, security, sidewalk, silver, simplicity, steel, street, structure, town, urban, walkway, white,