---
type: "Bill"
title: "Vehicles: child restraint systems."
description: "Vehicles: child restraint systems."
jurisdiction: "us/states/ca"
legislature: "California Legislature"
session: "20032004"
identifier: "AB 2139"
citation: "California AB 2139 (20032004)"
classification: ["bill"]
subjects: ["Vehicles: child restraint systems."]
status: "enacted"
primary_sponsors: ["Maze"]
version_count: 9
action_count: 22
vote_count: 6
first_action: "2004-02-18"
last_action: "2004-09-09"
source: "openstates"
source_identifier: "ocd-bill/cb493040-9cd5-4649-b208-92a92e5a2250"
source_url: "http://leginfo.legislature.ca.gov/faces/billNavClient.xhtml?bill_id=200320040AB2139"
source_hash: "adbe3f470ca858da24dd5e9c3cc7624cc3545a5fc23fd26a1e53dcc6ccb247b1"
vintage: "2026-07-01"
source_snapshot: "https://data.openstates.org/daily/2026-07-01/public.pgdump"
retrieved_at: "2026-07-06"
confidence: "reported"
tags: ["legislation", "bill", "us-ca"]
---

# California AB 2139 (20032004) — Vehicles: child restraint systems.

## Version chain

The bill's text revisions, in order — the diff chain from filing to enrollment.

1. **02/18/04 - Introduced** (filed) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=200320040AB2139&version=20030AB213999INT)
2. **03/22/04 - Amended Assembly** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=200320040AB2139&version=20030AB213998AMD)
3. **04/12/04 - Amended Assembly** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=200320040AB2139&version=20030AB213997AMD)
4. **05/20/04 - Amended Senate** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=200320040AB2139&version=20030AB213996AMD)
5. **06/08/04 - Amended Senate** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=200320040AB2139&version=20030AB213995AMD)
6. **07/01/04 - Amended Senate** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=200320040AB2139&version=20030AB213994AMD)
7. **09/09/04 - Chaptered** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=200320040AB2139&version=20030AB213992CHP)
8. **AB2139** (committee substitute) — [source](http://leginfo.legislature.ca.gov/faces/billNavClient.xhtml?bill_id=200320040AB2139)
9. **08/16/04 - Enrolled** (enrolled) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=200320040AB2139&version=20030AB213993ENR)

## Votes

- Do pass. — **pass** (pass) · lower
- ab 2139 maze concurrence in senate amendments — **pass** (pass) · lower
- Do pass. — **fail** (fail) · upper
- do pass as amended. — **pass** (pass) · upper
- assembly 3rd reading ab2139 maze by figueroa — **pass** (pass) · upper
- ab 2139 maze assembly third reading — **pass** (pass) · lower

## Sponsors

- Maze — primary (person)
- Pavley — coauthor (person)

## Timeline

The legislative action history — every referral, reading, and vote.

- **2004-09-09** Chaptered by Secretary of State - Chapter 420, Statutes of 2004.
- **2004-09-09** Approved by the Governor. `executive-signature`
- **2004-08-25** Enrolled and to the Governor at 3 p.m.
- **2004-08-16** Senate amendments concurred in. To enrollment. (Ayes 76. Noes 0. Page 7129.) `committee-passage-favorable, amendment-passage`
- **2004-08-05** In Assembly. Concurrence in Senate amendments pending. May be considered on or after August 7 pursuant to Assembly Rule 77.
- **2004-08-05** Read third time, passed, and to Assembly. (Ayes 21. Noes 7. Page 4793.) `reading-3, passage, reading-1`
- **2004-07-01** Read second time, amended, and to third reading. `reading-2, amendment-passage, reading-1`
- **2004-06-30** From committee: Amend, and do pass as amended. (Ayes 9. Noes 0.). `amendment-introduction, amendment-passage, committee-passage`
- **2004-06-15** In committee: Set first hearing. Failed passage. Reconsideration granted.
- **2004-06-08** From committee chair, with author's amendments: Amend, and re-refer to committee. Read second time, amended, and re-referred to Standing Committee on Transportation. `referral-committee, amendment-passage, amendment-introduction, reading-2, reading-1`
- **2004-05-20** From committee chair, with author's amendments: Amend, and re-refer to committee. Read second time, amended, and re-referred to Standing Committee on Transportation. `referral-committee, amendment-passage, amendment-introduction, reading-2, reading-1`
- **2004-05-13** Referred to Standing Committee on Transportation. `referral-committee`
- **2004-04-29** In Senate. Read first time. To Standing Committee on Rules for assignment. `reading-1`
- **2004-04-29** Read third time, passed, and to Senate. (Ayes 71. Noes 0. Page 5426.) `reading-3, passage, reading-1`
- **2004-04-28** Read second time. To third reading. `reading-2, reading-1`
- **2004-04-27** From committee: Do pass. (Ayes 13. Noes 0.) (April 26). `committee-passage-favorable, committee-passage`
- **2004-04-12** From committee chair, with author's amendments: Amend, and re-refer to Standing Committee on Transportation Read second time and amended. Re-referred to Standing Committee on Transportation (Corrected April 26. ). `referral-committee, amendment-passage, amendment-introduction, reading-2, reading-1`
- **2004-03-23** Re-referred to Standing Committee on Transportation. `referral-committee`
- **2004-03-22** From committee chair, with author's amendments: Amend, and re-refer to Standing Committee on Transportation Read second time and amended. `referral-committee, amendment-passage, amendment-introduction, reading-2, reading-1`
- **2004-03-01** Referred to Standing Committee on Transportation. `referral-committee`
- **2004-02-19** From printer. May be heard in committee March 20.
- **2004-02-18** Read first time. To print. `reading-1`

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/cb493040-9cd5-4649-b208-92a92e5a2250`. Confidence: reported (aggregated from official California legislature records).