---
type: "Bill"
title: "Medium- and heavy-duty zero-emission vehicles: public agency utilities."
description: "Executive Order No. N-79-20 establishes the goal of transitioning medium- and heavy-duty vehicles in California to zero-emission vehicles by 2045 for all operations where feasible and by 2035 for drayage trucks, and requires the State Air Resources Board to develop and propose medium- and heavy-duty vehicle regulations to meet that goal."
jurisdiction: "us/states/ca"
legislature: "California Legislature"
session: "20232024"
identifier: "AB 1594"
citation: "California AB 1594 (20232024)"
classification: ["bill"]
subjects: ["Medium- and heavy-duty zero-emission vehicles", "public agency utilities"]
status: "enacted"
primary_sponsors: ["Garcia"]
version_count: 8
action_count: 30
vote_count: 9
first_action: "2023-02-17"
last_action: "2023-10-08"
source: "openstates"
source_identifier: "ocd-bill/f4033778-8fbf-43a8-ab5c-46fa4bd8dbe7"
source_url: "http://leginfo.legislature.ca.gov/faces/billNavClient.xhtml?bill_id=202320240AB1594"
source_hash: "292e30f9933b005ef322dfd9b9a45486e18deaa6dc2b10527c5444ae73d2917c"
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 1594 (20232024) — Medium- and heavy-duty zero-emission vehicles: public agency utilities.

Executive Order No. N-79-20 establishes the goal of transitioning medium- and heavy-duty vehicles in California to zero-emission vehicles by 2045 for all operations where feasible and by 2035 for drayage trucks, and requires the State Air Resources Board to develop and propose medium- and heavy-duty vehicle regulations to meet that goal.

## Version chain

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

1. **02/17/23 - Introduced** (filed) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=202320240AB1594&version=20230AB159499INT)
2. **03/13/23 - Amended Assembly** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=202320240AB1594&version=20230AB159498AMD)
3. **05/18/23 - Amended Assembly** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=202320240AB1594&version=20230AB159497AMD)
4. **07/13/23 - Amended Senate** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=202320240AB1594&version=20230AB159496AMD)
5. **09/01/23 - Amended Senate** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=202320240AB1594&version=20230AB159495AMD)
6. **10/08/23 - Chaptered** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=202320240AB1594&version=20230AB159493CHP)
7. **AB1594** (committee substitute) — [source](http://leginfo.legislature.ca.gov/faces/billNavClient.xhtml?bill_id=202320240AB1594)
8. **09/18/23 - Enrolled** (enrolled) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=202320240AB1594&version=20230AB159494ENR)

## Votes

- Do pass as amended — **7–0** (pass) · upper
- Do pass as amended, but first amend, and re-refer to the Committee on [Appropriations] with the recommendation: To Consent Calendar — **16–0** (pass) · upper
- AB 1594 Garcia Concurrence in Senate Amendments — **78–0** (pass) · lower
- Do pass and be re-referred to the Committee on [Appropriations] with recommendation: To Consent Calendar — **15–0** (pass) · lower
- Do pass, but first be re-referred to the Committee on [Transportation] with the recommendation: To Consent Calendar — **7–0** (pass) · upper
- AB 1594 Garcia Assembly Third Reading — **80–0** (pass) · lower
- Placed on suspense file — **7–0** (pass) · upper
- Do pass as amended. — **11–0** (pass) · lower
- 3rd Reading AB1594 Garcia et al. By Bradford — **34–1** (pass) · upper

## Sponsors

- Garcia — primary (person)
- Bradford — coauthor (person)
- Dahle — coauthor (person)
- Wendy Carrillo — coauthor (person)

## Timeline

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

- **2023-02-17** Read first time. To print. `reading-1`
- **2023-02-18** From printer. May be heard in committee March 20.
- **2023-03-09** Referred to Com. on TRANS. `referral-committee`
- **2023-03-13** From committee chair, with author's amendments: Amend, and re-refer to Com. on TRANS. Read second time and amended. `amendment-introduction, amendment-passage, reading-1, reading-2`
- **2023-03-14** Re-referred to Com. on TRANS. `referral-committee`
- **2023-04-25** Coauthors revised.
- **2023-04-25** From committee: Do pass and re-refer to Com. on APPR. with recommendation: To Consent Calendar. (Ayes 15. Noes 0.) (April 24). Re-referred to Com. on APPR. `committee-passage, committee-passage-favorable, referral-committee`
- **2023-05-10** In committee: Set, first hearing. Referred to APPR. suspense file. `referral-committee`
- **2023-05-18** From committee: Amend, and do pass as amended. (Ayes 11. Noes 0.) (May 18). `amendment-introduction, amendment-passage, committee-passage`
- **2023-05-18** Read second time and amended. Ordered returned to second reading. `amendment-passage, reading-1, reading-2`
- **2023-05-22** Read second time. Ordered to third reading. `reading-1, reading-2`
- **2023-05-31** Read third time. Passed. Ordered to the Senate. (Ayes 80. Noes 0. Page 2017.) `passage, reading-1, reading-3`
- **2023-06-01** In Senate. Read first time. To Com. on RLS. for assignment. `reading-1`
- **2023-06-14** Referred to Coms. on E.Q. and TRANS. `referral-committee`
- **2023-07-05** From committee: Do pass and re-refer to Com. on TRANS. with recommendation: To Consent Calendar. (Ayes 7. Noes 0.) (July 5). Re-referred to Com. on TRANS. `committee-passage, committee-passage-favorable, referral-committee`
- **2023-07-12** From committee: Amend, and do pass as amended and re-refer to Com. on APPR with recommendation: To Consent Calendar. (Ayes 16. Noes 0.) (July 11). `amendment-introduction, amendment-passage, committee-passage, referral-committee`
- **2023-07-13** Read second time and amended. Re-referred to Com. on APPR. `amendment-passage, reading-1, reading-2, referral-committee`
- **2023-08-14** In committee: Referred to APPR suspense file. `referral-committee`
- **2023-09-01** From committee: Amend, and do pass as amended. (Ayes 7. Noes 0.) (September 1). `amendment-introduction, amendment-passage, committee-passage`
- **2023-09-01** Read second time and amended. Ordered returned to second reading. `amendment-passage, reading-1, reading-2`
- **2023-09-05** Read second time. Ordered to third reading. `reading-1, reading-2`
- **2023-09-08** Ordered to special consent calendar.
- **2023-09-11** From special consent calendar
- **2023-09-11** Ordered to third reading.
- **2023-09-13** Read third time. Passed. Ordered to the Assembly. (Ayes 34. Noes 1. Page 2703.). `passage, reading-1, reading-3`
- **2023-09-13** In Assembly. Concurrence in Senate amendments pending.
- **2023-09-13** Senate amendments concurred in. To Engrossing and Enrolling. (Ayes 78. Noes 0. Page 3473.). `amendment-passage, committee-passage-favorable`
- **2023-09-21** Enrolled and presented to the Governor at 3:30 p.m.
- **2023-10-08** Approved by the Governor. `executive-signature`
- **2023-10-08** Chaptered by Secretary of State - Chapter 585, Statutes of 2023. `became-law`

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/f4033778-8fbf-43a8-ab5c-46fa4bd8dbe7`. Confidence: reported (aggregated from official California legislature records).