Car seat laws in Pennsylvania

A child under 2 must be fastened in a rear-facing child passenger restraint system, used until the child outgrows the manufacturer's maximum weight and height limits. NHTSA and the AAP recommend going further: keeping your child rear-facing as long as possible, until they reach the top height or weight limit allowed by the car seat's manufacturer. A child under age 1 should always ride rear-facing, and most convertible seats allow rear-facing for 2 years or more.

A child 4 or older but under 8 must be fastened in a seat belt and an appropriately fitting booster seat. There is no height exemption. NHTSA and the AAP recommend going further: using a belt-positioning booster seat after your child outgrows the harnessed seat, until the vehicle seat belt fits properly, typically when they reach about 4 feet 9 inches tall and are 8 to 12 years old. The AAP says an adult seat belt fits when: the shoulder belt lies across the middle of the chest and shoulder, not the neck or throat; the lap belt is low and snug across the upper thighs, not the belly; and the child is tall enough to sit against the vehicle seat back with knees bent over the edge of the seat without slouching, and can stay that way for the whole trip. NHTSA uses the same lap-belt and shoulder-belt checks. The 5-step test, which California writes into law from January 1, 2027, asks: 1) Does the child sit all the way back against the seat? 2) Do the knees bend over the edge of the seat? 3) Does the shoulder belt snugly cross the center of the chest and shoulder, not the neck? 4) Is the lap belt as low as possible, touching the thighs? 5) Can the child stay seated like this for the whole trip?

No back-seat requirement in law. PennDOT recommends the back seat through age 12. NHTSA and the AAP recommend keeping all children younger than 13 in the back seat.

Summary offense with a $75 fine for car seat or booster violations; the 8-17 belt rule carries a $10 fine. Not a moving violation. Charges are dismissed if the driver shows the judge proof of acquiring a child seat or booster before or at the hearing. Insurers may not raise premiums for a conviction.

NHTSA's locator lists 159 car seat inspection stations in Pennsylvania, in 127 cities and towns. Harrisburg has the most (5), then West Chester and York (4 each). Certified technicians check seats for free in most cases. Search NHTSA's locator by ZIP code and call the station before you go.