what height on a child do booster seats have to be
Current California Law: 1  Children under 2 years of age shall ride in a rear-facing car seat unless the child weighs 40 or more pounds OR is 40 or more inches tall. â 2 Children under the age of 8 must be secured in a car seat or booster seat in the back seat. Children who are 8 years of age OR have reached 4â9â in height may be secured by a booster seat, but at a minimum must be secured by a safety belt.