The age that a child should use a car seat booster is when they are 2 years of age. Some kids need to use them a little bit earlier because weight and height has an effect on how earlier the kids need to use the booster seat.
If your talking about the booster seat without a back then NO, It is not safe for the child to ride with only a lap belt.
When they about the height of 4'9".
in all states a child has to be 4foot nine to be out of a booster seat. they can be in a booster sear at any age.
The Booster offers safe, comfortable rides for someones child. Moving from a car seat to a booster seat still helps the child remain safe, while riding comfortably in the booster seat.
A child should use a car seat until they are ready for a booster seat you will know when its basically like clothes they will outgrow it. they should be in the booster seat until they are 4 foot 9.
I believe the answer is 4'9". There is also a weight limit if your child is on the shorter side. If your child does not meed either requirement, then you have to use a booster seat.
Integrated child booster seats are available on some cars and buses. These usually include five-point harness seat belts. Children who are required by your state's law to use a car seat or booster seat should use the integrated seats when available.
A child that is age 8 or younger and weighs no more than 80 pounds can use a booster seat in New Jersey. Children over the age 8 must use a seat belt.
the weight to sit in a booster seat is...40 pounds AND the age of 4 years, BUT preferably the child is longer.
The Safeguard Go is a child's hybrid car seat and booster seat in one. It has a 5 point harness to hold the child, up to 60 pounds. When the child outgrows the harness, they can use the booster with a regular lap seat belt up to 100 pounds of weight.
Do this to check if a child can leave a booster. The child should place their back on the seat with their big ass in the end. If the child's feet can touch the ground they are ready. Most children stop using booster seats when they are 7.