Archive: Rear-facing infant seats are generally suitable for babies up to 25lbs (about 13 kilograms), roughly from birth to 12 months. Although they can be fitted in the front if absolutely necessary, it is much safer to install all child car seats in the back seat of the car. This is especially important if there is a passenger side air bag in the front seat. Were anything to cause the air bag to deploy, the force of the deployment would be enough to cause serious injury to a child in the front seat. In fact, according to the National Highway Traffic Safety Administration (NHTSA) all children age 12 and under should ride in the back seat. The rear-facing design of these seats provides greater protection for the baby's head, neck and spine than forward-facing seats, and it really is best to keep your baby in a rear-facing seat for as long as possible.