What is the recommended age and weight for a child using a booster seat?

• A. 5-8 years old and 40-80 lbs
• B. 6-9 years old and 30-60 lbs
• C. 4-7 years old and 20-40 lbs
• D. 7-9 years old and 50-100 lbs

Answer: (A)

Booster seats are used to ensure the vehicle’s seat belt fits a child correctly as they outgrow a forward-facing car seat but aren’t tall enough for the belt to fit properly on its own. The recommended range here—about 5 to 8 years old and 40 to 80 pounds—matches the stage where the booster helps position the lap belt low on the thighs and the shoulder belt across the chest, not the neck or face. This proper belt fit reduces injury risk in a crash and supports the child’s size as they grow.

If a child is younger than five or weighs less than forty pounds, they typically need a car seat with a harness because a booster won’t provide adequate restraint. Once a child exceeds about eighty pounds or is tall enough for the seat belt to fit correctly without a booster, they may transition to a belt-only restraint.