It all depends on the country you live in, the standard is 12 years old though.
The child should sit in the back until 12 for safety, but the child could sit in the front when they're 8. They have to be 57 inches or taller.
A child should not sit in the front but a tween (Atween is a person the ages of 11-12) can sit in the front as long as the tween is over 80 pounds.
Children under 8 years of age who weigh less than 80 pounds to ride properly secured in a child safety seat or booster seat in the rear seat of the...
There are no "front seat" laws in Massachusetts. In April, 2008, Governor Patrick signed Bill 2018 - The Booster Seat Bill, into law. The law went into effect on July 10, 2008. Here is the Mass Gov...