California car seat law requires children under two to ride rear-facing, children under eight to ride in a car seat or booster in the back seat, and everyone under 16 to be properly buckled up. A first violation carries a $100 base fine that reaches $486 after mandatory penalty assessments, plus one point on your driving record.
Rear-Facing Seats for Children Under Two
Children younger than two must ride in a rear-facing car seat. The only ways out of rear-facing before the second birthday are if the child already weighs 40 pounds or more, or is at least 40 inches tall.1California Highway Patrol. Child Safety Seats
Whichever seat you use, it has to be used within the manufacturer’s height and weight limits printed on the label. A seat rated to 30 pounds cannot legally hold a 35-pound toddler, even if the child is still under two.
Car Seats and Boosters for Ages Two Through Seven
Once a child outgrows rear-facing, they move to a forward-facing car seat with a harness, and later to a booster. California groups these years together in one rule: children under eight must be secured in a car seat or booster seat, and they must ride in the back seat.1California Highway Patrol. Child Safety Seats
There is one early exit. A child under eight who has already reached 4 feet 9 inches tall may switch to a regular safety belt instead of a booster.2California Legislative Information. California Vehicle Code 27363 Most children do not hit that height until well after age eight, so plan on the booster until then.
Seat Belt Rules for Ages Eight Through Fifteen
From age eight through fifteen, a child must be secured either by a child restraint system or by a properly fitting safety belt.3California Legislative Information. California Vehicle Code 27360.5 “Properly fitting” is defined, not left to guesswork. The belt fits when:
- The child sits all the way back against the vehicle seat.
- The knees bend naturally over the front edge of the cushion.
- The shoulder belt crosses the center of the chest and shoulder, not the neck.
- The lap belt sits low, touching the tops of the thighs.
Fail any one of those, and the child still needs a booster.3California Legislative Information. California Vehicle Code 27360.5 Plenty of eight- and nine-year-olds who legally age out of the booster requirement still can’t pass this test.
One thing to know about who gets ticketed: if the child’s parent or legal guardian is in the car but not driving, the citation goes to the parent or guardian, not the driver.3California Legislative Information. California Vehicle Code 27360.5
Exceptions
California allows a few narrow exceptions, and none of them let you skip restraints altogether.
- A court can exempt a child if a standard restraint is impractical because of a medical condition, physical limitation, or the child’s size. The court may require documentation and proof that no suitable special-needs seat is available.2California Legislative Information. California Vehicle Code 27363
- In a life-threatening emergency, or when the child is riding in an authorized emergency vehicle, the car seat requirement is waived. A seat belt is still required.2California Legislative Information. California Vehicle Code 27363
- A child over 40 pounds may ride in the back seat with only a lap belt if the back seat has no combination lap-and-shoulder belt.2California Legislative Information. California Vehicle Code 27363
The medical exception is a court determination, not a doctor’s note handed to an officer at the roadside. If you think your child qualifies, work it out with the physician and the court in advance.
Fines, Fees, and Points
The base fine for a first child restraint violation is $100. That number is misleading, because California adds mandatory penalty assessments, surcharges, and court fees to every traffic fine. The out-the-door total on a first offense is $486.4California Courts. Uniform Bail and Penalty Schedules A second or subsequent offense starts at a $250 base fine, which pushes the actual bill well over $1,000 after the same assessments.
Each violation also adds one point to your driving record.5California Department of Public Health. Child Safety Brochure Points can raise your auto insurance premiums, and enough points inside the DMV’s counting window can trigger a negligent operator hearing and a license suspension.
A judge can also order attendance at a child passenger safety program. If the fine is reduced or waived, program attendance becomes mandatory; if you pay in full, the court still has discretion to require it.
Rideshare Rides Are Not Exempt
Uber and Lyft rides are covered by the same law. If your child needs a car seat, your child needs a car seat in the rideshare, and you are the one responsible for providing and installing it.6Uber. Uber’s Community Guidelines – Following the Law Drivers can cancel the trip if they don’t think the child can be transported safely.
This trips up travelers, especially at airports. If you are flying into California with a young child, bring a seat or arrange one on the other end. Some platforms list car-seat-equipped options in some markets, but availability isn’t reliable enough to count on.
Check Your Installation
Meeting the law and having a seat that actually works in a crash are two different things. A properly installed car seat should not move more than one inch side-to-side or front-to-back when you grab it at the belt path and tug. For the harness, buckle the child in, put the chest clip at armpit level, and try to pinch the strap at the shoulder. If you can grab any slack, tighten it.
If you are not sure, get it checked for free. The California Highway Patrol has certified child passenger safety technicians at local area offices who will inspect your setup and show you how to correct it.1California Highway Patrol. Child Safety Seats The California Office of Traffic Safety keeps a county-by-county directory of inspection stations, education programs, and low-cost purchase or loaner programs.7California Office of Traffic Safety. Who’s Got Car Seats