---
type: "Bill"
title: "Reduction of greenhouse gases emissions: mobility options."
description: "Existing law establishes the Clean Cars 4 All Program, which is administered by the State Air Resources Board to focus on achieving reductions in the emissions of greenhouse gases, improvements in air quality, and benefits to low-income state residents through the replacement of high-polluter motor vehicles with cleaner and more efficient motor vehicles or a mobility option. Existing law defines specified terms, including \"mobility option\", which means a voucher for public transit or car sharing for purposes of the program."
jurisdiction: "us/states/ca"
legislature: "California Legislature"
session: "20192020"
identifier: "SB 400"
citation: "California SB 400 (20192020)"
classification: ["bill"]
subjects: ["Reduction of greenhouse gases emissions: mobility options."]
status: "enacted"
primary_sponsors: ["Umberg"]
version_count: 4
action_count: 21
vote_count: 6
first_action: "2019-02-20"
last_action: "2019-09-06"
source: "openstates"
source_identifier: "ocd-bill/cfc3e8b8-250c-4295-a053-c0776bd8cb49"
source_url: "http://leginfo.legislature.ca.gov/faces/billNavClient.xhtml?bill_id=201920200SB400"
source_hash: "7cff251f38c75a99d7ed662f7c05308d303c6798825894a108d2d04cca65435b"
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 SB 400 (20192020) — Reduction of greenhouse gases emissions: mobility options.

Existing law establishes the Clean Cars 4 All Program, which is administered by the State Air Resources Board to focus on achieving reductions in the emissions of greenhouse gases, improvements in air quality, and benefits to low-income state residents through the replacement of high-polluter motor vehicles with cleaner and more efficient motor vehicles or a mobility option. Existing law defines specified terms, including "mobility option", which means a voucher for public transit or car sharing for purposes of the program.

## Version chain

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

1. **02/20/19 - Introduced** (filed) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=201920200SB400&version=20190SB40099INT)
2. **09/06/19 - Chaptered** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=201920200SB400&version=20190SB40097CHP)
3. **SB400** (committee substitute) — [source](http://leginfo.legislature.ca.gov/faces/billNavClient.xhtml?bill_id=201920200SB400)
4. **08/23/19 - Enrolled** (enrolled) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=201920200SB400&version=20190SB40098ENR)

## Votes

- Do pass, but first be re-referred to the Committee on [Appropriations] — **12–0** (pass) · upper
- Do pass, but first be re-referred to the Committee on [Transportation] — **5–0** (pass) · upper
- Do pass and be re-referred to the Committee on [Appropriations] — **14–0** (pass) · lower
- SB 400 Umberg Senate Third Reading By Ting — **74–0** (pass) · lower
- Do pass. — **18–0** (pass) · lower
- 3rd Reading — **38–0** (pass) · upper

## Sponsors

- Umberg — primary (person)

## Timeline

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

- **2019-02-20** Introduced. Read first time. To Com. on RLS. for assignment. To print. `introduction, reading-1`
- **2019-02-21** From printer. May be acted upon on or after March 23.
- **2019-02-28** Referred to Coms. on EQ. and TRANS. `referral-committee`
- **2019-03-05** Set for hearing April 3.
- **2019-04-03** From committee: Do pass and re-refer to Com. on TRANS. (Ayes 5. Noes 0. Page 549.) (April 3). Re-referred to Com. on TRANS. `committee-passage-favorable, committee-passage, referral-committee`
- **2019-04-10** Set for hearing April 23.
- **2019-04-24** From committee: Do pass and re-refer to Com. on APPR. (Ayes 12. Noes 0. Page 805.) (April 23). Re-referred to Com. on APPR. `committee-passage-favorable, committee-passage, referral-committee`
- **2019-04-26** Set for hearing May 6.
- **2019-05-06** From committee: Be ordered to second reading pursuant to Senate Rule 28.8. `committee-passage, reading-2`
- **2019-05-07** Read second time. Ordered to third reading. `reading-1, reading-2`
- **2019-05-20** Read third time. Passed. (Ayes 38. Noes 0. Page 1150.) Ordered to the Assembly. `passage, reading-3, reading-1`
- **2019-05-21** In Assembly. Read first time. Held at Desk. `reading-1`
- **2019-05-30** Referred to Com. on TRANS. `referral-committee`
- **2019-07-02** From committee: Do pass and re-refer to Com. on APPR. (Ayes 14. Noes 0.) (July 1). Re-referred to Com. on APPR. `committee-passage-favorable, committee-passage, referral-committee`
- **2019-08-14** From committee: Do pass. (Ayes 18. Noes 0.) (August 14). `committee-passage-favorable, committee-passage`
- **2019-08-15** Read second time. Ordered to third reading. `reading-1, reading-2`
- **2019-08-22** Read third time. Passed. (Ayes 74. Noes 0. Page 2809.) Ordered to the Senate. `passage, reading-3, reading-1`
- **2019-08-22** In Senate. Ordered to engrossing and enrolling.
- **2019-08-27** Enrolled and presented to the Governor at 3 p.m.
- **2019-09-06** Approved by the Governor. `executive-signature`
- **2019-09-06** Chaptered by Secretary of State. Chapter 271, Statutes of 2019.

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/cfc3e8b8-250c-4295-a053-c0776bd8cb49`. Confidence: reported (aggregated from official California legislature records).