Car seats

How long a child stays in each type of car seat, including rear-facing as long as possible versus switching at the legal minimum.

How long should our child stay rear-facing and in a booster seat?

In short: Parents choose between 3 main approaches: Rear-facing to the seat's limit; Rear-facing to 2, then forward; Legal minimum. Evidence: well established. Guidance and evidence agree. The real question is whether you'll follow it. Best settled: during pregnancy.

Evidence
Well established
Best settled
During pregnancy
Part of
Raising the child

Car seats: what are the options?

Parents usually land on one of these 3 approaches.

  1. 1. Rear-facing to the seat's limit

    The child faces the back of the car until they reach the seat's height or weight limit.

  2. 2. Rear-facing to 2, then forward

    The child faces the back until two, then turns forward.

  3. 3. Legal minimum

    You follow what the law requires and no more.

Car seats: what does the evidence say?

Well established. Guidance and evidence agree. The real question is whether you'll follow it.

AAP: rear-facing as long as possible

Sources

What else is worth knowing?

Car seats greatly reduce injury in crashes, and facing backward protects a young child's head and neck. Pediatric guidance is to stay rear-facing as long as the seat allows. Laws set a lower minimum and vary by state and province.

Questions to ask each other

  • Who will learn how to install the seat properly?
  • How long do we want to keep the baby rear-facing?
  • How will we handle relatives who use their own cars?

More in Safety, risk and independence

First published 2026-10-03. Last updated 2026-10-05. General information, not medical advice.