Ключевые слова: alberta, america, american, area, attention, canada, canadian, car, caution, country, crime, danger, federal, field, grass, highway, information, landscape, law, manitoba, mutcd, nature, north, notice, plains, pole, post, prairie, road, roadside, roadsign, route, rural, saskatchewan, sign, signpost, sky, states, summer, symbol, towers, traffic, transmission, transport, transportation, warning, watch, way, yellow,