Atkinson is an English-language surname. The name is derived from a patronymic form of the Middle English Atkin.
These are much more conservative than state laws, in general (for instance, everyone should be in a booster seat from about age 4 to at least age 8) but remain less conservative than some of the european standards (for instance, the European Child Safety Alliance recommends that children remain in rear-facing carseats until 3 years of age).
Q-What about children who outgrow their safety seats before age four?* A-Most 2-year-olds and many 3-year-olds are too immature to sit still in a booster with a lap and shoulder belt, which allows them to lean forward or sideways.