Ключевые слова: accident, alert, attention, barricade, barrier, block, boundary, caution, closed, concept, construction, control, crossing, danger, detour, direction, equipment, fence, forbidden, gate, highway, hurdle, industry, maintenance, object, obstacle, parking, protection, reconstruction, repair, risk, road, roadblock, roadsign, roadwork, safe, safety, security, sign, signal, stop, street, striped, symbol, tool, traffic, transportation, warning, work,