republic-os/legislation/us/states/ca/20112012/ab-2020.md

---
type: "Bill"
title: "Vehicles: driving under the influence: chemical tests."
description: "Existing law provides that a person who is lawfully arrested for driving under the influence of a drug or the combined influence of an alcoholic beverage and drug has a choice of whether a chemical test to determine his or her drug or drug and alcohol level shall be a blood, breath, or urine test. If the person chooses to submit to a breath test, he or she may also be requested to submit to a blood or urine test if the officer has reasonable cause to believe that the person was driving under the influence of a drug or the combined influence of an alcoholic beverage and a drug and if the officer has a clear indication that a blood or urine test will reveal evidence of the person being under the influence. Existing law exempts a person who is afflicted with hemophilia, or a heart condition and is using an anticoagulant, from the blood test."
jurisdiction: "us/states/ca"
legislature: "California Legislature"
session: "20112012"
identifier: "AB 2020"
citation: "California AB 2020 (20112012)"
classification: ["bill"]
subjects: ["Vehicles: driving under the influence: chemical tests."]
status: "enacted"
primary_sponsors: ["Pan"]
version_count: 5
action_count: 21
vote_count: 5
first_action: "2012-02-23"
last_action: "2012-08-27"
source: "openstates"
source_identifier: "ocd-bill/9c85aa4f-016e-461f-a778-a6dc45033cc3"
source_url: "http://leginfo.legislature.ca.gov/faces/billNavClient.xhtml?bill_id=201120120AB2020"
source_hash: "788e585730934d935376843fb36180266bcaaf1ae83db4f487d63570e9fb9d92"
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 2020 (20112012) — Vehicles: driving under the influence: chemical tests.

Existing law provides that a person who is lawfully arrested for driving under the influence of a drug or the combined influence of an alcoholic beverage and drug has a choice of whether a chemical test to determine his or her drug or drug and alcohol level shall be a blood, breath, or urine test. If the person chooses to submit to a breath test, he or she may also be requested to submit to a blood or urine test if the officer has reasonable cause to believe that the person was driving under the influence of a drug or the combined influence of an alcoholic beverage and a drug and if the officer has a clear indication that a blood or urine test will reveal evidence of the person being under the influence. Existing law exempts a person who is afflicted with hemophilia, or a heart condition and is using an anticoagulant, from the blood test.

## Version chain

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

1. **02/23/12 - Introduced** (filed) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=201120120AB2020&version=20110AB202099INT)
2. **04/19/12 - Amended Assembly** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=201120120AB2020&version=20110AB202098AMD)
3. **08/27/12 - Chaptered** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=201120120AB2020&version=20110AB202096CHP)
4. **AB2020** (committee substitute) — [source](http://leginfo.legislature.ca.gov/faces/billNavClient.xhtml?bill_id=201120120AB2020)
5. **08/13/12 - Enrolled** (enrolled) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=201120120AB2020&version=20110AB202097ENR)

## Votes

- Do pass, but re-refer to the Committee on Appropriations. — **7–0** (pass) · upper
- Do pass as amended. — **4–0** (pass) · lower
- AB 2020 PAN Assembly Third Reading — **68–0** (pass) · lower
- 3rd Reading AB2020 Pan By Gaines — **36–3** (pass) · upper
- Do pass. — **16–0** (pass) · lower

## Sponsors

- Pan — primary (person)

## Timeline

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

- **2012-02-23** Read first time. To print. `reading-1`
- **2012-02-24** From printer. May be heard in committee March 25.
- **2012-03-08** Referred to Com. on PUB. S. `referral-committee`
- **2012-03-27** In committee: Set, first hearing. Hearing canceled at the request of author.
- **2012-04-18** From committee: Do pass as amended. (Ayes 4. Noes 0.) (April 10). `amendment-passage, committee-passage, committee-passage-favorable`
- **2012-04-19** Read second time and amended. Ordered to second reading. `reading-2, reading-1, amendment-passage`
- **2012-04-23** Read second time. Ordered to third reading. `reading-2, reading-1`
- **2012-04-23** Re-referred to Com. on APPR. pursuant to Joint Rule 10.5. `referral-committee`
- **2012-05-09** From committee: Do pass. (Ayes 16. Noes 0.) (May 9). `committee-passage, committee-passage-favorable`
- **2012-05-10** Read second time. Ordered to third reading. `reading-2, reading-1`
- **2012-05-17** Read third time. Passed. Ordered to the Senate. (Ayes 68. Noes 0. Page 4879.) `reading-3, reading-1, passage`
- **2012-05-17** In Senate. Read first time. To Com. on RLS. for assignment. `reading-1`
- **2012-05-24** Referred to Com. on PUB. S. `referral-committee`
- **2012-06-19** From committee: Do pass and re-refer to Com. on APPR. (Ayes 7. Noes 0.) (June 19). Re-referred to Com. on APPR. `referral-committee, committee-passage, committee-passage-favorable`
- **2012-07-02** From committee: Be placed on second reading file pursuant to Senate Rule 28.8. `committee-passage`
- **2012-07-03** Read second time. Ordered to third reading. `reading-2, reading-1`
- **2012-08-09** Read third time. Passed. Ordered to the Assembly. (Ayes 36. Noes 3. Page 4435.). `reading-3, reading-1, passage`
- **2012-08-09** In Assembly. Ordered to Engrossing and Enrolling. `committee-passage`
- **2012-08-15** Enrolled and presented to the Governor at 3:10 p.m.
- **2012-08-27** Approved by the Governor. `executive-signature`
- **2012-08-27** Chaptered by Secretary of State - Chapter 196, Statutes of 2012.

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/9c85aa4f-016e-461f-a778-a6dc45033cc3`. Confidence: reported (aggregated from official California legislature records).