Ключевые слова: alert, alertness, applies, attention, aware, awareness, black, blue, care, careful, caution, cautious, circle, command, communication, compulsory, control, danger, dangerous, design, direct, go, graphic, green, halt, hazard, hazardous, illustration, importance, inform, information, information sign, instruct, instruction, mandatory, manually, manually operated temporary go sign, no people, notice, obligation, obligatory, observations, operated, outdoor, outdoors, outside, regulation, requirement, road, road sign, road works, roads, route, routes, sign, signs, sky, square, stop, street sign, symbol, symbols, temporary, temporary go sign, traffic, traffic sign, transport, transportation, uk, vehicles, vigilance, vigilant, warn, warning, white,