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).
Laws change form place to place but the average age is 12-13 years.   It is not so much a factor of the weight of the child. Diamaler  Chrysler like any other car company â¦ , states that the children under  12 years old need to stay in the back seat with a seat belt and or  proper child restraints.