---
type: "Bill"
title: "Motor vehicles; providing definition of \"Tillerman\". Effective date."
description: "Motor vehicles; providing definition of \"Tillerman\". Effective date."
jurisdiction: "us/states/ok"
legislature: "Oklahoma Legislature"
session: "2017-2018"
identifier: "SB 21"
citation: "Oklahoma SB 21 (2017-2018)"
classification: ["bill"]
subjects: []
status: "enacted"
primary_sponsors: ["Allen", "Vaughan"]
version_count: 5
action_count: 20
vote_count: 2
first_action: "2017-02-06"
last_action: "2017-04-24"
source: "openstates"
source_identifier: "ocd-bill/c9059a60-b5ca-44af-8adc-f8701d52dad5"
source_url: "http://www.oklegislature.gov/BillInfo.aspx?Bill=SB21&session=1800"
source_hash: "e25196cc382761fc844dd9a6e4d4012b6d5bc079f8f3dae8fe3d469706d128d9"
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-ok"]
---

# Oklahoma SB 21 (2017-2018) — Motor vehicles; providing definition of "Tillerman". Effective date.

## Version chain

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

1. **Introduced** (filed) — [source](http://webserver1.lsb.state.ok.us/cf_pdf/2017-18 INT/SB/SB21 INT.PDF)
2. **Engrossed** (committee substitute) — [source](http://webserver1.lsb.state.ok.us/cf_pdf/2017-18 ENGR/SB/SB21 ENGR.PDF)
3. **Enrolled (final version)** (committee substitute) — [source](http://webserver1.lsb.state.ok.us/cf_pdf/2017-18 ENR/SB/SB21 ENR.PDF)
4. **Floor (House)** (committee substitute) — [source](http://webserver1.lsb.state.ok.us/cf_pdf/2017-18 FLR/HFLR/SB21 HFLR.PDF)
5. **Floor (Senate)** (committee substitute) — [source](http://webserver1.lsb.state.ok.us/cf_pdf/2017-18 FLR/SFLR/SB21 SFLR.PDF)

## Votes

- THIRD READING — **87–0** (pass) · lower
- THIRD READING — **43–3** (pass) · upper

## Sponsors

- Allen — primary (person)
- Vaughan — primary (person)

## Timeline

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

- **2017-02-06** First Reading `introduction, reading-1`
- **2017-02-06** Authored by Senator Allen
- **2017-02-07** Second Reading referred to Transportation `reading-2, referral-committee`
- **2017-02-14** Reported Do Pass Transportation committee; CR filed `committee-passage`
- **2017-02-16** Coauthored by Representative Vaughan (principal House author)
- **2017-02-21** General Order, Considered
- **2017-02-21** Measure passed: Ayes: 43 Nays: 3 `passage`
- **2017-02-21** Referred for engrossment
- **2017-02-22** Engrossed to House `passage`
- **2017-02-22** First Reading `introduction, reading-1`
- **2017-03-27** Second Reading referred to Transportation `reading-2, referral-committee`
- **2017-04-03** CR; Do Pass Transportation Committee `committee-passage`
- **2017-04-13** General Order
- **2017-04-13** Third Reading, Measure passed: Ayes: 87 Nays: 0 `reading-3, passage`
- **2017-04-13** Signed, returned to Senate
- **2017-04-17** Referred for enrollment
- **2017-04-18** Enrolled, to House
- **2017-04-18** Signed, returned to Senate
- **2017-04-18** Sent to Governor `executive-receipt`
- **2017-04-24** Approved by Governor 04/24/2017 `executive-signature`

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/c9059a60-b5ca-44af-8adc-f8701d52dad5`. Confidence: reported (aggregated from official Oklahoma legislature records).