Safety
California car seat laws
California's under-2 rear-facing rule and its 40 lb / 40 inch exception, read from the CHP's own page.
There is no national car seat law in the United States. Each state sets its own thresholds, and several permit less than every pediatric body recommends.
Why there is no single answer
Child restraint requirements in the United States are set by state law, not federal law. Federal rules govern the seats themselves — every restraint sold must meet Federal Motor Vehicle Safety Standard 213 — but the question of who must be in what, and until when, is answered fifty different ways.
The variation is not trivial. Some states set a minimum age for rear-facing; others do not mention direction of travel at all. Booster requirements end at an age in some states, a height in others, and whichever comes first in others again. Back-seat requirements differ. Penalties range from a small fine to a moving violation with license points.
The states we have verified
We publish a state page only where we could read the requirements from the state's own statute or transportation-department page. That is a deliberately high bar for this subject, and it is why there are three pages here rather than fifty. Each page names the source and the date we read it.
Safety
Florida car seat laws
Statute 316.613 read in full: carriers through 3, boosters at 4-5, the exemptions, and the gap after age 5.
Safety
New York car seat laws
VTL 1229-c read in full: under-2 rear-facing, under-4 safety seats, the 40 lb clause, and belts to 16.
If your state is not here, the reliable route is your state's own DMV, DOT or legislature site — not a summary table on a commercial website, including this one. State thresholds change, and a stale table is worse than no table because it looks authoritative.
How the three states compare
This table summarizes only what we read from each state's own source on the date shown. Where a state's law does not address something, the cell says so rather than filling the gap with a general recommendation.
| California | Florida | New York | |
|---|---|---|---|
| Rear-facing requirement | Under 2 must ride rear-facing, unless the child weighs 40+ lb or is 40+ inches tall | Not addressed by age in the statute — restraint type is specified by age instead | Must be rear-facing while under age 2, unless the child exceeds the seat maker's height or weight limits |
| Car seat / restraint required until | Under 8 must be in a car seat or booster | Through age 5 (ages 0-3 a carrier or integrated seat; ages 4-5 a carrier, integrated seat or booster) | Under 8 must use an appropriate child restraint system |
| Back seat requirement | Children under 8 must be secured in the back seat | Not specified in 316.613 by seating position | The section's requirements are framed around back seat passengers, with front seat passengers following the same age-based rules |
| May use the adult belt from | Age 8, or 4 ft 9 in tall — whichever comes first | Age 6 (the restraint requirement covers through age 5) | Age 8 (ages 8 to under 16 must wear an approved safety belt) |
| Statute cited | CVC 27360 and 27363, per the California Highway Patrol | Florida Statutes 316.613 | NY Vehicle and Traffic Law 1229-c |
Notice what the table shows about the gap between law and best practice. Florida's restraint requirement ends after age 5 — at which point a typical child is nowhere near passing the five-step belt fit test, and every pediatric body would still have them in a booster. California and New York run to 8, which is closer but still short of the 4 ft 9 in threshold most children reach between 10 and 12.
Which law applies when you travel
The law that applies is the law of the state you are driving in, not the state you live in or the state your car is registered in. On a multi-state road trip that means the requirements can change several times in a day, and the practical answer is to travel to the strictest standard on your route rather than tracking each border.
In reality that is also the easy answer, because best practice — rear-facing to the seat's limit, harness to the seat's limit, booster until the adult belt fits — exceeds every state's minimum. A child restrained to best practice complies everywhere without you having to check anything.
- Rental cars bring their own issues — rental seats have unverifiable history. See rental cars and car seats.
- Taxis and rideshare are exempt from child restraint requirements in some states, including in Florida's list of exempted vehicle types. Exempt does not mean safe: an unrestrained child in a taxi is unrestrained.
- Flying is governed by FAA rules rather than state law — see car seat rules on airplanes.
Frequently asked questions
Is there a federal car seat law in the US?
No. Federal law regulates the seats themselves — every child restraint sold must meet Federal Motor Vehicle Safety Standard 213 — but the requirement to use one, and until what age or height, is set by each state individually. That is why the rules change when you cross a state line and why there is no single national answer.
Which state's law applies when I drive across state lines?
The law of the state you are driving in at the time, not the state you live in or where the car is registered. On a multi-state trip the requirements can change several times, so the practical approach is to restrain your child to the strictest standard on the route. Following best practice complies with every state's law automatically.
Does following the law mean my child is safely restrained?
Not necessarily, and this is the most important thing to understand about car seat law. Every state's requirement is a legal minimum that avoids a citation, and several permit moving to the next stage earlier than any pediatric body recommends — Florida's restraint requirement, for example, ends after age 5. The standard worth following is your seat's own height and weight limits.
Why do you only cover three states?
Because we publish a state page only where we could read the requirements from the state's own statute or transportation-department page. Texas was planned and is not published: its statutes site serves a JavaScript shell that returns no statutory text to any automated request, and the state transportation pages we tried returned errors. Three verified states beats five where two came from memory.
Are taxis and rideshares exempt from car seat laws?
In some states, yes — Florida's statute, for example, lists hired passenger vehicles such as taxis and limousines among exempted vehicle types. An exemption changes the legal position and nothing else: a child unrestrained in a taxi is unrestrained in a crash. If you use taxis regularly, a lightweight travel car seat or a folding booster is the practical answer.
How often do state car seat laws change?
Individual states amend their requirements every few years, often to add a rear-facing minimum age or to raise a booster threshold. That is exactly why we date every page with when we read the source, and why we recommend checking your state's own site rather than any commercial summary — including this one — before relying on a specific threshold.
Sources
- California Highway Patrol — Child Safety Seats (citing CVC 27360, 27363) — read 2026-09-26
- Florida Statutes 316.613 — Child restraint requirements (Florida Legislature) — read 2026-09-26
- New York Vehicle and Traffic Law 1229-c (New York State Senate) — read 2026-09-26
- NHTSA — Car Seats and Booster Seats — read 2026-09-26
- American Academy of Pediatrics (HealthyChildren.org) — Car Safety Seats — read 2026-09-26
- CDC — Child Passenger Safety — read 2026-09-26
Read next
Safety
California car seat laws
California's under-2 rear-facing rule and its 40 lb / 40 inch exception, read from the CHP's own page.
Safety
Florida car seat laws
Statute 316.613 read in full: carriers through 3, boosters at 4-5, the exemptions, and the gap after age 5.
Safety
New York car seat laws
VTL 1229-c read in full: under-2 rear-facing, under-4 safety seats, the 40 lb clause, and belts to 16.
Safety
When to switch car seat stages
All three transitions and the real trigger for each — outgrowing the seat, never reaching a birthday.
Car Seats
The best booster seats
Five boosters ranked on belt fit, with the five-step test that decides whether one is needed at all.
Travel
Rental cars and car seats
The six-point counter inspection, when to refuse a rental seat, and installing in an unfamiliar car.