---
type: "Bill"
title: "Oklahoma Trauma Systems Improvement and Development Act; setting forth certain provisions related to rules and meetings. Effective date."
description: "Oklahoma Trauma Systems Improvement and Development Act; setting forth certain provisions related to rules and meetings. Effective date."
jurisdiction: "us/states/ok"
legislature: "Oklahoma Legislature"
session: "2020"
identifier: "SB 156"
citation: "Oklahoma SB 156 (2020)"
classification: ["bill"]
subjects: []
status: "enacted"
primary_sponsors: ["Roberts (Sean)", "Simpson"]
version_count: 8
action_count: 29
vote_count: 2
first_action: "2019-02-04"
last_action: "2019-05-15"
source: "openstates"
source_identifier: "ocd-bill/823b7dd2-04b6-4d4f-872e-dc7160dba82d"
source_url: "http://www.oklegislature.gov/BillInfo.aspx?Bill=SB156&session=2000"
source_hash: "b4d26103b5c59c38d6140fdc9c0f955a745e3d59e94824d81c3748c1f16f8bd9"
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 156 (2020) — Oklahoma Trauma Systems Improvement and Development Act; setting forth certain provisions related to rules and meetings. 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/2019-20 INT/SB/SB156 INT.PDF)
2. **1 Floor Amendment by ROBERTS** (committee substitute) — [source](http://webserver1.lsb.state.ok.us/cf_pdf/2019-20 FLOOR AMENDMENTS/House/SB156 FA1 ROBERTSSE-SH.PDF)
3. **2 Floor Amendment by ROBERTS** (committee substitute) — [source](http://webserver1.lsb.state.ok.us/cf_pdf/2019-20 FLOOR AMENDMENTS/House/SB156 FA2 ROBERTSSE-SH.PDF)
4. **Amended And Engrossed** (committee substitute) — [source](http://webserver1.lsb.state.ok.us/cf_pdf/2019-20 AMENDMENTS/Amendment & Engr/SB156 HASB & ENGR.PDF)
5. **Engrossed** (committee substitute) — [source](http://webserver1.lsb.state.ok.us/cf_pdf/2019-20 ENGR/SB/SB156 ENGR.PDF)
6. **Enrolled (final version)** (committee substitute) — [source](http://webserver1.lsb.state.ok.us/cf_pdf/2019-20 ENR/SB/SB156 ENR.PDF)
7. **Floor (House)** (committee substitute) — [source](http://webserver1.lsb.state.ok.us/cf_pdf/2019-20 FLR/HFLR/SB156 HFLR.PDF)
8. **Floor (Senate)** (committee substitute) — [source](http://webserver1.lsb.state.ok.us/cf_pdf/2019-20 FLR/SFLR/SB156 SFLR.PDF)

## Votes

- FOURTH READING — **45–0** (pass) · upper
- THIRD READING — **44–0** (pass) · upper

## Sponsors

- Roberts (Sean) — primary (person)
- Simpson — primary (person)

## Timeline

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

- **2019-02-04** First Reading `introduction, reading-1`
- **2019-02-04** Authored by Senator Simpson
- **2019-02-05** Second Reading referred to Health and Human Services `referral-committee, reading-2`
- **2019-02-18** Reported Do Pass Health and Human Services committee; CR filed `committee-passage`
- **2019-02-28** Coauthored by Representative Roberts (Sean) (principal House author)
- **2019-03-11** General Order, Considered
- **2019-03-11** Measure passed: Ayes: 44 Nays: 0 `passage`
- **2019-03-11** Referred for engrossment
- **2019-03-12** Engrossed to House `passage`
- **2019-03-12** First Reading `introduction, reading-1`
- **2019-03-19** Second Reading referred to Appropriations and Budget `referral-committee, reading-2`
- **2019-03-20** Referred to Appropriations and Budget Health Subcommittee `referral-committee`
- **2019-04-01** Recommendation to the full committee; Do Pass Appropriations and Budget Health Subcommittee `committee-passage`
- **2019-04-11** CR; Do Pass, as amended, Appropriations and Budget Committee `committee-passage`
- **2019-04-11** Title stricken
- **2019-04-23** General Order
- **2019-04-23** Amended `amendment-passage`
- **2019-04-23** Title restored
- **2019-04-23** Third Reading, Measure passed: Ayes: 93 Nays: 2 `passage, reading-3`
- **2019-04-23** Referred for engrossment
- **2019-04-24** Engrossed, signed, to Senate `passage`
- **2019-04-24** HAs read
- **2019-05-08** HAs adopted
- **2019-05-08** Measure passed: Ayes: 45 Nays: 0 `passage`
- **2019-05-08** Referred for enrollment
- **2019-05-09** Enrolled, to House
- **2019-05-09** Signed, returned to Senate
- **2019-05-09** Sent to Governor `executive-receipt`
- **2019-05-15** Approved by Governor 05/15/2019 `executive-signature`

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/823b7dd2-04b6-4d4f-872e-dc7160dba82d`. Confidence: reported (aggregated from official Oklahoma legislature records).