Two numbers get compared on every car seat page, and they are not measuring the same thing. One is a state’s rear-facing law: the youngest age a child may legally stop riding rear-facing. The other is the recommendation from the American Academy of Pediatrics and the National Highway Traffic Safety Administration: ride rear-facing for as long as the car seat allows.
Those are different questions with different answers, and the gap between them is the whole point of this page.
What the law sets
Of the 51 states and DC covered here, 32 have a statute that sets a rear-facing requirement with a number attached. All 32 use age one or two years as the floor:
- Six states — Alaska, Alabama, Iowa, New Mexico, Tennessee and Wisconsin — set the age at one year. Alaska’s statute, for example, requires rear-facing for “a child less than one year of age or a child one year of age or older who weighs less than 20 pounds.” Alabama and Wisconsin read almost the same way, pairing one year with a 20-pound weight limit.
- The other 26 set the age at two years. Connecticut’s statute requires rear-facing for “a child under two years of age or weighing less than thirty pounds.” Washington’s law does not name a weight or height number at all — it requires rear-facing “until the child reaches the weight or height limit of the child restraint system as set by the manufacturer,” which hands the actual cutoff to whatever seat the family owns.
Twelve of the 32 states pair the age with a specific weight cutoff (usually 20 or 30 pounds), and three — California, DC and Illinois — also set a height figure. The remaining 19 states have no rear-facing requirement in their child restraint statute at all. That does not mean those states have no car seat law; in states like Texas, Mississippi, Indiana and Utah, the statute requires a “child passenger safety seat system” or “child restraint device” used according to the manufacturer’s instructions, without naming a rear-facing stage, a forward-facing stage or an age at which one becomes the other. The requirement is written as one continuous rule that runs to the booster age instead of being split into stages.
For the full breakdown by state, see the rear-facing comparison page.
What NHTSA and AAP recommend
Both organizations recommend riding rear-facing well past the ages in any of those statutes. NHTSA’s guidance: “Children under age 1 should always ride in a rear-facing car seat… Keep your child rear-facing as long as possible — it’s the best way to keep them safe — until they reach the top height or weight limit allowed by the car seat’s manufacturer.” The AAP’s version, published on HealthyChildren.org, says the same thing: “All infants should ride rear-facing, starting with their first ride home from the hospital, and should continue riding rear-facing as long as possible until they reach the highest weight or height allowed by their car safety seat’s manufacturer.”
Neither organization names an age. The limit they point to is the seat’s own manufacturer rating, not a birthday. Many convertible car seats sold today rear-face to 40 or 50 pounds, which is well past what a typical two-year-old weighs — often into age three or four for an average-sized child.
Reading the two together
The law tells you the earliest point at which turning a child forward-facing stops being a violation. It does not tell you the earliest point at which it stops being risky, and it is not written to. A parent in Wisconsin whose one-year-old weighs 21 pounds is not breaking any law by turning that child forward-facing — Wisconsin’s rule ends at one year or 20 pounds, whichever comes first. The AAP recommendation does not change because the law’s floor was reached; it stays the same regardless of which state the family lives in.
Washington’s statute is worth a second look because it collapses the two questions into one: the rear-facing requirement lasts “until the child reaches the weight or height limit of the child restraint system as set by the manufacturer” — which is exactly the AAP and NHTSA standard, written directly into the law rather than left as a recommendation on top of it.
For the statute text, sources and verified date behind any state’s rule, see that state’s page; each one links out to the exact section it was read from.