Children aged 4-8 years old and under 4 feet, 9 inches in height must use which type of car seat?

Children aged 4-8 years old and under 4 feet, 9 inches in height must use a booster seat. The primary purpose of a booster seat is to elevate a child so that the vehicle's seat belt fits correctly. A properly fitted seat belt lies across the child's thighs and chest, ensuring comfort and safety.

Using a booster seat is crucial because seat belts are designed for adults, and a child who is too small to sit firmly against the vehicle's seat may not be protected properly in the event of a crash. Booster seats help to position the seat belt at the correct height, significantly reducing the risk of injury.

While standard car seats and convertible car seats may be appropriate for younger children, they do not fulfill the specific requirements for children in the stated age and height range, making the booster seat the suitable choice for their safety.