Ключевые слова: alberta, arrow, attention, beware, break, bus, canada, caution, children, communicate, convenience, direction, drive, forbid, govern, hour, illegal, indicate, information, kid, law, legal, license, limit, mandatory, no, orange, park, pedestrian, placard, prohibit, rectangle, reflective, road, roadway, rule, sidewalk, sign, signal, street, student, time, traffic, transportation, valid, vehicle, white, youth, zone,