Booster seat requirements in Kansas
A car seat or booster until age 8.
Unless the child is taller than 57 inches (4 ft 9 in) or weighs at least 80 lb, which ends the requirement whatever their age.
- Seat belt alone from
- age 8
- First offense
- $60
Every figure on this page was read at Kan. Stat. Ann. §§ 8-1344, 8-1345 on 4 October 2026. Read the statute
What the Kansas booster seat law says
The stages below are separate rules in the statute, not one rule in steps.
| Rule | Figure | What Kansas requires |
|---|---|---|
| Car seat or booster | under 8 years | Until age 8, unless the child is taller than 57 inches (4 ft 9 in) or weighs at least 80 lb. |
| Adult seat belt alone | from 8 years | Lawful from age 8, or once the child reaches more than 57 inches (4 ft 9 in) or 80 lb. |
| Penalty | $60 | $60 for a first offense. Condition K.S.A. 8-1345(a) sets a flat sixty dollar fine and is not a moving violation for licensing purposes. Under 8-1345(b) the fine is waived outright for a violation of 8-1344(a)(1) or (a)(2) if the driver shows the court they have since bought an approved restraint, and the citing officer is required to tell the driver so. Failing to restrain several children in the same car at the same time is a single violation. |
Size ends the requirement, whichever comes first. A child who is taller than 57 inches (4 ft 9 in) or weighs at least 80 lb is out of the booster in Kansas whatever their age. A child who has not reached that stays in one until age 8. The size is an escape from the age rule rather than a second thing that also has to be true. Kansas gives more than one, and meeting either is enough.
Where this and size guidance disagree, follow the stricter one. A belt that crosses the neck rather than the middle of the chest is worse protection than a booster even where the statute allows it.
The statute
Kansas sets this in Kan. Stat. Ann. §§ 8-1344, 8-1345. Read it at the source.
This is information, not legal advice. A city or county in Kansas can set a stricter rule than the state one, and an officer enforces the text of the statute rather than a summary of it. Where this page and the statute differ, the statute is right and this page is a bug.
Where this comes from
- Statute
- Kan. Stat. Ann. §§ 8-1344, 8-1345
- Source
- www.ksrevisor.gov
- Jurisdiction
- Kansas (KS), state law only
- Last reviewed
- 4 October 2026 0 days ago
- Read at the statute
- 4 October 2026
- Signed off by a person
- Not yet
- Amendment history
- L. 2015, ch. 48, § 9