Photo of rear-facing child car seat Newborn babies and infants require special protection while in a vehicle. In a collision, properly installed rear-facing car seats can save your child's life.

Infant car seats should face the back of the vehicle, rest on a 45-degree angle and move no more than 2.5 cm (1 in.) side-to-side or forward at the base. If necessary, use a towel or a foam bar (pool noodle) under the base of the child car seat to adjust the angle. Harness straps should be slotted at or below a baby's shoulders. You should not be able to fit more than one finger underneath the harness straps at the child's collarbone. The chest clip should be flat against the chest at armpit level.

When the child outgrows the maximum height and weight of his/her infant seat, you may require a convertible rear-facing seat until your child is ready to be facing forward. The law requires using a rear-facing car seat until the baby is at least 9 kilograms (20 lb.) The law is a minimum requirement.

The law is a minimum requirement. It’s best to keep your child rear-facing until they are at least one year old or until they have reached either the maximum height or weight limits of the rear-facing seat.