How long does a child have to sit in a booster seat in Pa?

In Pennsylvania, children are required to use a booster seat until they are at least 8 years old or until they reach a height of 4 feet 9 inches. The law mandates that children must be in a car seat or booster seat until they meet these criteria. It's important for parents to ensure that their child is properly secured in a booster seat for optimal safety until they are ready to use a standard seat belt alone.