According to Mississippi law, children of what age must use a belt-positioning booster seat system?

In Mississippi, the law requires that children who are four years old but less than seven years old must use a belt-positioning booster seat system. This regulation is in place to ensure the safety of young children who have outgrown their forward-facing car seats but are not yet large enough to be safely restrained by a standard seat belt alone.

Belt-positioning booster seats help position the seat belt so that it fits properly over a child's body, especially in the event of a collision. This is important because seat belts are designed for adult-sized bodies, and without proper positioning, a child may be at higher risk of injury in the event of an accident.

Using a booster seat until the child reaches the appropriate size or age, as outlined by the law, ensures that they are adequately protected while traveling in a vehicle.