Ключевые слова: alberta, america, american, attention, canada, canadian, car, caution, country, danger, federal, frame, green, highway, information, keep, landscape, lane, law, lines, manitoba, multi, must, mutcd, nature, north, notice, plains, prairie, regulatory, right, road, roads, roadside, roadsign, route, rural, saskatchewan, sign, signage, signpost, slow, states, symbol, traffic, transport, transportation, warning, way,