It has been established that the use of rear-facing car seats prevents serious injuries to infants’ head and neck and saves lives. The American Academy of Pediatrics recommends that all infants ride rear facing starting from their first ride home from the hospital and should ride rear facing for as long as possible. The American Academy of Pediatrics states that children who weigh 40 pounds or less are best protected in a rear-facing seat with its own internal harness.
There are three types of rear-facing seats available: rear-facing only, convertible seats, and three-in-one seats. An article in healthychildren.org describes the three types as follows: