Holiday visits often mean handing the car keys, and the kids, to Grandma and Grandpa. A quick ride to see the lights or a long drive to a family dinner feels routine. Yet car seat rules have changed a great deal since many grandparents buckled in their own children. This guide walks parents and grandparents through California car seat laws, booster rules, and what to do if a holiday trip ends in a crash.
Why the Grandparent Pickup Deserves a Second Look
Many grandparents raised their families when lap belts and front-seat riding felt normal. Many last thought about California car seat laws decades ago. Today’s seats look different, install differently, and come with strict height and weight limits. A seat that fits snugly in a parent’s SUV may not fit correctly in a grandparent’s sedan.
Holiday schedules add pressure. Families juggle airport runs, school pickups, and evening events, often with borrowed or rarely used seats. Our article on holiday travel accident risks explains why roads grow more dangerous this time of year. Before the first pickup, parents can walk grandparents through buckling the harness, tightening the straps, and checking that nothing twists or sags.
California Car Seat Laws Apply to Every Driver
Under Vehicle Code Section 27360, a parent, legal guardian, or driver may not transport a child under eight without securing the child in the rear seat in an appropriate restraint that meets federal safety standards. When a parent or legal guardian rides along, that section does not apply to the driver. When grandparents drive the children alone, the responsibility rests with them.
That point matters for every grandparent pickup. California car seat laws make no exception for a short trip to the store or a ride across town. Vehicle Code Section 27363 lists only narrow exceptions, such as a child under eight who already stands 4’9″ tall or a vehicle with no rear seat.
What California Car Seat Laws Require by Age
The California Highway Patrol summarizes the rules this way:
- Under 2: Children ride rear-facing unless they weigh at least 40 pounds or stand at least 40 inches tall.
- Under 8: Children ride in a car seat or booster seat in the back seat.
- Age 8 or 4’9″ tall: Children may use a booster seat but, at a minimum, must wear a safety belt.
CHP encourages families to keep children in each stage as long as the seat maker’s limits allow. The California Office of Traffic Safety also recommends that all children 13 and under ride in the back seat. Remember that California car seat laws set minimums, not best practices. Each seat also carries its own height and weight limits, so check the labels and manual rather than guessing.
A Seat Belt Fit Test Arrives in 2027
A new state law, Assembly Bill 435, builds on existing California car seat laws for older children. Beginning January 1, 2027, the revised Vehicle Code Section 27360.5 covers children ages 8 through 15. Each must ride in an appropriate child restraint or be “properly restrained by a safety belt.” The law spells out five checks:
- Back flat against the vehicle seat.
- Knees bent naturally over the edge of the seat.
- Shoulder belt across the chest and shoulder, not the neck.
- Lap belt low across the upper thighs.
- Able to stay seated this way for the whole trip.
If a grandchild fails any of these checks, a booster seat remains the safer choice. Parents can share this simple test with grandparents before the next holiday drive.
Holiday Road Trip Checklist for Grandparents
- Move the right seat. Transfer the child’s own seat rather than borrowing an unfamiliar one.
- Check the labels. Confirm the seat fits the child’s current height and weight and has not passed its expiration date.
- Look up recalls. NHTSA encourages families to register car seats so they receive safety updates.
- Install it tightly. Follow both the seat manual and the vehicle owner’s manual.
- Keep kids in back. Never place a rear-facing seat in front of an active passenger air bag.
- Plan for rest stops. Long drives over the Grapevine test everyone’s patience, so build in breaks.
Free Help Checking a Car Seat
NHTSA notes that certified technicians will inspect a car seat free of charge in most cases. The Office of Traffic Safety adds that every local CHP office offers child safety seat checks. A short appointment before the holidays can catch a loose base or a twisted harness. Bring the seat’s instruction manual and, if possible, the grandchild who will ride in it. A technician can also explain how California car seat laws apply to your grandchild’s seat.
After a Crash in a Relative’s Car
Even careful drivers face crashes that others cause. If a child rides in your car during a collision, get medical care right away, even when injuries seem minor. Children may not describe pain clearly, and some injuries appear later. Photograph the car seat, its installation, and the vehicle before anyone moves them. Insurers may ask whether the child rode in a seat that met California car seat laws, and those photos help answer that question.
NHTSA recommends replacing car seats after a moderate or severe crash. A crash counts as minor only when you could drive the vehicle away, the nearest door shows no damage, no one suffered injuries, the air bags did not deploy, and the seat shows no visible damage.
Claims for children follow special rules. A court generally must approve a settlement for a minor, and our article on guardianship and minor settlements explains that process. Adults in the car have rights too, as our article for an injured passenger explains.
Questions About California Car Seat Laws? Talk With Our Team
At Colvin Accident Lawyers, we know how frightening it is to get the call that a grandchild suffered injuries during a holiday trip. Our Bakersfield child injury lawyer team helps families with insurance claims, court approval, and medical bills while they focus on recovery. When a negligent driver causes the crash, our Bakersfield car accident lawyers can investigate and pursue compensation. You can also read what our clients say.
Call (661) 616-1177 or contact us online. We answer the phone 24/7.
