Children that are less than how many years old must be in a booster seat?

The correct answer is that children less than 8 years old must be in a booster seat according to Missouri law. The regulation is in place to ensure the safety of children while traveling in vehicles, as seat belts are designed for adults and may not adequately protect smaller children. Using a booster seat helps position the seat belt correctly over the child's body, minimizing the risk of injury in case of an accident.

Understanding the age limit is crucial for parents and caregivers, as it reinforces the importance of using appropriate car safety measures for children as they grow. Prior to the age of 8, a child's smaller stature typically means that standard seat belts do not offer sufficient protection, making the use of a booster seat essential for their safety in a vehicle.