Ключевые слова: alertness, asphalt, background, boundary, bright, cone, construction, control, danger, day, design, detail, equipment, expertise, gloved, hand, industrial, industry, job, labor, man, men at work, orange, outdoors, performance, person, place, placing, plastic, precaution, repair, repairing, risk, road, road sign, roadwork, safety, shape, sign, street, sunlight, symbol, traffic, warning, warning sign, workers, working,