Ключевые слова: access, america, american, asphalt, beware, border, closed, construction, construction site, control, customs, danger, digging, directing, direction, drive, driving, excavation, expressway, flag, gesture, highway, industrial, infrastructure, men at work, movement, occupation, profession, red, renew, repair, risk, road, route, safety, sign, signage, speed, stop, surface, tarmac, traffic, transport, transportation, travel, upgrade, warning, way, work, worker,