A properly worn seat belt now means passing the 5-Step test, for children and adults
A seat belt counts as properly worn only if the rider passes the 5-Step test: seated fully back, knees bent at the seat edge, shoulder belt across the chest, lap belt low on the thighs, for the whole trip. It covers drivers and all passengers.
Who it affects
Drivers, passengers and parents carrying children
When
This law took effect on January 1, 2026, but the changes described here start on January 1, 2027.
- : Signed into law
- : Law took effect
- : The changes described here start to apply
Official text
California AB 435: Vehicles: child passenger restraints.
On California Legislative Information. The official text is what counts; read it before you act.
Not legal advice. Plain-English summaries to help you find what changes and when. Not legal advice: read the official text, and ask a lawyer about your situation.