Ключевые слова: arrow, background, barrier, boundary, building, caution, construct, construction, danger, design, development, entry, equipment, hardhat, hat, head, helmet, highway, hurdle, icon, industry, interim, internet, isolated, number, object, obstacle, plastic, post, protection, protective, reconstruction, road, safety, security, shiny, sign, signal, single, street, tool, under, underground, wear, web, white, worker, working, yellow,