---
type: "Bill"
title: "Zero Traffic Fatalities Task Force."
description: "Existing law requires the Department of Transportation to include in the California Manual on Uniform Traffic Control Devices a requirement that the department and local authorities, when setting speed limits, round speed limits to the nearest 5 miles per hour of the 85th percentile speed of traffic as determined by an engineering and traffic survey. Existing law authorizes the department or a local authority to round the speed limit down to the lower 5 miles per hour increment in instances when the speed limit should be rounded up, but prohibits that speed limit from being further reduced for any reason."
jurisdiction: "us/states/ca"
legislature: "California Legislature"
session: "20172018"
identifier: "AB 2363"
citation: "California AB 2363 (20172018)"
classification: ["bill"]
subjects: ["Zero Traffic Fatalities Task Force."]
status: "enacted"
primary_sponsors: ["Friedman"]
version_count: 9
action_count: 25
vote_count: 7
first_action: "2018-02-14"
last_action: "2018-09-21"
source: "openstates"
source_identifier: "ocd-bill/02a67c17-a697-43f8-aab0-a2acb5c79367"
source_url: "http://leginfo.legislature.ca.gov/faces/billNavClient.xhtml?bill_id=201720180AB2363"
source_hash: "5928d578010711581d8dbf06d3c90163a6a89d040a7e726d81996080fb60eea7"
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 2363 (20172018) — Zero Traffic Fatalities Task Force.

Existing law requires the Department of Transportation to include in the California Manual on Uniform Traffic Control Devices a requirement that the department and local authorities, when setting speed limits, round speed limits to the nearest 5 miles per hour of the 85th percentile speed of traffic as determined by an engineering and traffic survey. Existing law authorizes the department or a local authority to round the speed limit down to the lower 5 miles per hour increment in instances when the speed limit should be rounded up, but prohibits that speed limit from being further reduced for any reason.

## Version chain

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

1. **02/14/18 - Introduced** (filed) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=201720180AB2363&version=20170AB236399INT)
2. **04/02/18 - Amended Assembly** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=201720180AB2363&version=20170AB236398AMD)
3. **04/26/18 - Amended Assembly** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=201720180AB2363&version=20170AB236397AMD)
4. **05/25/18 - Amended Assembly** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=201720180AB2363&version=20170AB236396AMD)
5. **06/21/18 - Amended Senate** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=201720180AB2363&version=20170AB236395AMD)
6. **08/08/18 - Amended Senate** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=201720180AB2363&version=20170AB236394AMD)
7. **09/21/18 - Chaptered** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=201720180AB2363&version=20170AB236392CHP)
8. **AB2363** (committee substitute) — [source](http://leginfo.legislature.ca.gov/faces/billNavClient.xhtml?bill_id=201720180AB2363)
9. **08/22/18 - Enrolled** (enrolled) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=201720180AB2363&version=20170AB236393ENR)

## Votes

- Do pass as amended — **5–1** (pass) · upper
- Do pass as amended, but first amend, and re-refer to the Committee on [Appropriations] — **10–2** (pass) · upper
- Do pass as amended. — **15–0** (pass) · lower
- Do pass as amended and be re-referred to the Committee on [Appropriations] — **13–1** (pass) · lower
- 3rd Reading AB2363 Friedman et al. By Wiener — **28–7** (pass) · upper
- AB 2363 FRIEDMAN Concurrence in Senate Amendments — **78–0** (pass) · lower
- AB 2363 FRIEDMAN Assembly Third Reading — **77–0** (pass) · lower

## Sponsors

- Friedman — primary (person)
- Frazier — author (person)

## Timeline

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

- **2018-02-14** Read first time. To print. `reading-1`
- **2018-02-15** From printer. May be heard in committee March 17.
- **2018-04-02** Referred to Com. on TRANS. `referral-committee`
- **2018-04-02** 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-2, reading-1`
- **2018-04-03** Re-referred to Com. on TRANS. `referral-committee`
- **2018-04-25** From committee: Amend, and do pass as amended and re-refer to Com. on APPR. (Ayes 13. Noes 1.) (April 23). `amendment-passage, committee-passage, amendment-introduction`
- **2018-04-26** Read second time and amended. `reading-1, amendment-passage, reading-2`
- **2018-04-30** Re-referred to Com. on APPR. `referral-committee`
- **2018-05-09** In committee: Set, first hearing. Referred to APPR. suspense file. `referral-committee`
- **2018-05-25** From committee: Amend, and do pass as amended. (Ayes 15. Noes 0.) (May 25). `amendment-passage, committee-passage, amendment-introduction`
- **2018-05-25** Read second time and amended. Ordered returned to second reading. `reading-1, amendment-passage, reading-2`
- **2018-05-29** Read second time. Ordered to third reading. `reading-2, reading-1`
- **2018-05-30** Read third time. Passed. Ordered to the Senate. (Ayes 77. Noes 0. Page 5487.) `reading-3, passage, reading-1`
- **2018-05-31** In Senate. Read first time. To Com. on RLS. for assignment. `reading-1`
- **2018-06-07** Referred to Com. on T. & H. `referral-committee`
- **2018-06-20** From committee: Amend, and do pass as amended and re-refer to Com. on APPR. (Ayes 10. Noes 2.) (June 19). `amendment-passage, committee-passage, amendment-introduction`
- **2018-06-21** Read second time and amended. Re-referred to Com. on APPR. `amendment-passage, reading-2, referral-committee, reading-1`
- **2018-08-07** From committee: Amend, and do pass as amended. (Ayes 5. Noes 1.) (August 6). `amendment-passage, committee-passage, amendment-introduction`
- **2018-08-08** Read second time and amended. Ordered to third reading. `reading-1, amendment-passage, reading-2`
- **2018-08-13** Read third time. Passed. Ordered to the Assembly. (Ayes 28. Noes 7. Page 5271.). `reading-3, passage, reading-1`
- **2018-08-14** In Assembly. Concurrence in Senate amendments pending. May be considered on or after August 16 pursuant to Assembly Rule 77.
- **2018-08-20** Senate amendments concurred in. To Engrossing and Enrolling. (Ayes 78. Noes 0. Page 6372.). `committee-passage-favorable, amendment-passage`
- **2018-08-24** Enrolled and presented to the Governor at 4:30 p.m.
- **2018-09-21** Approved by the Governor. `executive-signature`
- **2018-09-21** Chaptered by Secretary of State - Chapter 650, Statutes of 2018.

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/02a67c17-a697-43f8-aab0-a2acb5c79367`. Confidence: reported (aggregated from official California legislature records).