Ключевые слова: 30, ahead, alberta, approach, attention, beware, canada, careful, caution, children, communicate, convenience, danger, dangerous, diamond, drive, forbid, govern, indicate, information, kid, law, legal, license, limit, mandatory, maximum, pedestrian, play, playground, reflective, rhomb, road, roadway, rule, sidewalk, sign, signal, slide, speed, street, student, thirty, traffic, transportation, vehicle, warn, yellow, yield, youth,