I believe the recommended height is 4"3'
It is weight and height wise.
This depends on what kind of car you are using. If you are using a tool-based one, pressing the x key will usually stop the car. If you are using a seat-based car, letting go of the forward key will be sufficient to stop the car.
Power seat
The age in which a child can stop using a car seat or booster seat varies from state to state. In Michigan, the child safety seat law says that a child under the age of eight years old must be in a safety seat unless they are taller than 4' 9.
you have to be age 4 to stop using a car seat. If the child is larger than average then you could probebly get away with a llittle bit younger.
Car seat requirements are what the car seat companies want you to do to make sure it is the safest possible. It all depends on the car seat. But most are the same. Facing forward after a certain age/height.
it depends on the size and height
you have to be 136cm or over
110 lbs and its 4'6. for height
Putting a car seat in the front seat of your car is a terrible idea, regardless of the country. The height of the airbags can break a childs neck if just in a booster, and can jar a rear facing car seat, in the event of an accident. The front passenger seat is statistically the most dangerous seat in the car to in during an accident.
Using a car seat for your children is the best way to protect your child in a car. If your child is under two years old, the American Academy of Pediatrics recommend your child should ride the car rear facing. Make sure the person fastened the safety seat belt of the child in the car seat before driving the car. Always check the car seat labels for weight and height restrictions.