What should be done if a child is too large for a forward-facing seat but too small to use the car's seat belt properly?

Using a booster seat is the correct response because it is designed specifically for children who have outgrown their forward-facing car seats but are still not tall enough for the vehicle's seat belt to fit them properly. A booster seat raises the child so that the car's seat belt aligns correctly across their body—across the chest and hips—thereby ensuring maximum safety in the event of a collision.

A booster seat provides the necessary support to help prevent injury by positioning the seat belt correctly, which is crucial because a seat belt that is too high on the abdomen or too low on the neck can lead to serious injuries in an accident. By using a booster seat, the child maintains the protection offered by the vehicle's seat belt system while accommodating their growth and changing needs.