Ключевые слова: architecture, background, ball, barrier, block, bollard, boundary, car, city, colours, column, concrete, construction, control, defense, edge, empty, fence, grey, hemisphere, highway, industrial, iron, journey, level, line, metal, movement, pavement, pedestrian, post, protection, road, round, route, safe, safety, security, shield, sidewalk, sphere, stone, street, traffic, transportation, urban, walk, way,