Atkinson is an English-language surname. The name is derived from a patronymic form of the Middle English Atkin.
Once children outgrow their booster seat (usually at 10 â 12 years old) they can use the adult lap/shoulder safety belt if it fits them properly. Lap portion low over the hips/tops of thighs and shoulder belt crosses the center of the shoulder and center of the chest.
1 Infants and young children must ride in a child safety seat until they are 4 years old AND weigh at least 40 pounds. 2  Every child ages 4-8 who is no longer in a car seat must use a booster seat until she reaches 4â9â tall.  Children and teens ages 8-15 who are not in booster seats must use adult seat belts.