---
type: "Bill"
title: "Vehicles: exhaust systems: whistle-tip."
description: "Vehicles: exhaust systems: whistle-tip."
jurisdiction: "us/states/ca"
legislature: "California Legislature"
session: "20032004"
identifier: "AB 377"
citation: "California AB 377 (20032004)"
classification: ["bill"]
subjects: ["Vehicles: exhaust systems: whistle-tip."]
status: "enacted"
primary_sponsors: ["Chan"]
version_count: 9
action_count: 26
vote_count: 6
first_action: "2003-02-14"
last_action: "2003-09-22"
source: "openstates"
source_identifier: "ocd-bill/cbf85317-c719-4ece-af1b-178911b19d74"
source_url: "http://leginfo.legislature.ca.gov/faces/billNavClient.xhtml?bill_id=200320040AB377"
source_hash: "bda3250bbee7b25c205538d7c174d4f8bfd97196108f3caab49cd424f0518d59"
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 377 (20032004) — Vehicles: exhaust systems: whistle-tip.

## Version chain

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

1. **02/14/03 - Introduced** (filed) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=200320040AB377&version=20030AB37799INT)
2. **03/24/03 - Amended Assembly** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=200320040AB377&version=20030AB37798AMD)
3. **04/09/03 - Amended Assembly** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=200320040AB377&version=20030AB37797AMD)
4. **05/05/03 - Amended Assembly** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=200320040AB377&version=20030AB37796AMD)
5. **07/08/03 - Amended Senate** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=200320040AB377&version=20030AB37795AMD)
6. **08/19/03 - Amended Senate** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=200320040AB377&version=20030AB37794AMD)
7. **09/22/03 - Chaptered** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=200320040AB377&version=20030AB37792CHP)
8. **AB377** (committee substitute) — [source](http://leginfo.legislature.ca.gov/faces/billNavClient.xhtml?bill_id=200320040AB377)
9. **09/02/03 - Enrolled** (enrolled) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=200320040AB377&version=20030AB37793ENR)

## Votes

- ab 377 chan assembly third reading — **pass** (pass) · lower
- do pass as amended. — **pass** (pass) · lower
- assembly 3rd reading ab377 chan by perata — **pass** (pass) · upper
- Do pass as amended, and re-refer to the Committee on Appropriations. — **pass** (pass) · upper
- Do pass as amended and be re-referred to the Committee on Appropriations. — **pass** (pass) · lower
- ab 377 chan concurrence in senate amendments — **pass** (pass) · lower

## Sponsors

- Chan — primary (person)

## Timeline

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

- **2003-09-22** Chaptered by Secretary of State - Chapter 432, Statutes of 2003.
- **2003-09-20** Approved by the Governor. `executive-signature`
- **2003-09-09** Enrolled and to the Governor at 11:30 a.m.
- **2003-09-02** Senate amendments concurred in. To enrollment. (Ayes 69. Noes 5. Page 3284.) `committee-passage-favorable, amendment-passage`
- **2003-08-28** In Assembly. Concurrence in Senate amendments pending. May be considered on or after August 30 pursuant to Assembly Rule 77.
- **2003-08-27** Read third time, passed, and to Assembly. (Ayes 23. Noes 15. Page 2169.) `reading-3, passage, reading-1`
- **2003-08-20** Read second time. To third reading. `reading-2, reading-1`
- **2003-08-19** Read third time, amended. To second reading. `reading-3, amendment-passage, reading-1`
- **2003-07-22** Read second time. To third reading. `reading-2, reading-1`
- **2003-07-21** From committee: Be placed on second reading file pursuant to Senate Rule 28.8. `committee-passage`
- **2003-07-08** Read second time, amended, and re-referred to Standing Committee on Appropriations. `reading-2, referral-committee, amendment-passage, reading-1`
- **2003-07-07** From committee: Amend, do pass as amended, and re-refer to Standing Committee on Appropriations (Ayes 8. Noes 1.). `referral-committee, amendment-passage, amendment-introduction, committee-passage`
- **2003-05-29** Referred to Standing Committee on Transportation. `referral-committee`
- **2003-05-15** In Senate. Read first time. To Standing Committee on Rules for assignment. `reading-1`
- **2003-05-15** Read third time, passed, and to Senate. (Ayes 74. Noes 2. Page 1687.) `reading-3, passage, reading-1`
- **2003-05-06** Read second time. To third reading. `reading-2, reading-1`
- **2003-05-05** Read second time and amended. Ordered returned to second reading. `reading-2, amendment-passage, reading-1`
- **2003-05-01** From committee: Amend, and do pass as amended. (Ayes 24. Noes 0.) (April 30). `amendment-introduction, amendment-passage, committee-passage`
- **2003-04-10** Re-referred to Standing Committee on Appropriations. `referral-committee`
- **2003-04-09** Read second time and amended. `reading-2, amendment-passage, reading-1`
- **2003-04-08** From committee: Amend, do pass as amended, and re-refer to Standing Committee on Appropriations (Ayes 16. Noes 1.) (April 7). `referral-committee, amendment-passage, amendment-introduction, committee-passage`
- **2003-03-25** Re-referred to Standing Committee on Transportation. `referral-committee`
- **2003-03-24** 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`
- **2003-02-20** Referred to Standing Committee on Transportation. `referral-committee`
- **2003-02-18** From printer. May be heard in committee March 20.
- **2003-02-14** 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/cbf85317-c719-4ece-af1b-178911b19d74`. Confidence: reported (aggregated from official California legislature records).