Ключевые слова: alert, asphalt, attention, background, barrier, boundary, build, caution, city, cone, construct, construction, danger, design, equipment, forbidden, hat, highway, icon, illustration, industrial, industry, isolated, maintenance, marking, object, obstacle, orange, pavement, plastic, repair, road, safety, security, set, sign, signal, site, stop, street, striped, symbol, traffic, transportation, under, urban, warning, white, work,