Ключевые слова: alert, area, arrow, asphalt, barricade, barrier, building, car, caution, city, construction, development, engineering, equipment, hazard, heavy, highway, icon, industrial, industry, infrastructure, labor, maintenance, new, orange, outdoor, paving, project, public, reconstruction, repair, road, road construction, roadwork, safety, service, sign, site, street, tools, traffic, transport, transportation, under, urban, vehicle, warning, work, worker, zone,