Yes. Children less than one-year old are not allowed to be on bikes. Children between one and five years old must wear an approved helmet and be carried in a properly affixed child carrier. Children between five and thirteen must wear an approved helmet. Technically, a child’s fourteenth birthday means they no longer “must” wear a helmet. However, the most important advice we can give is that anyone, of any age, should ALWAYS wear a helmet while bicycling.