---
type: "Bill"
title: "Revise laws related to motor vehicle laws for clarity and consistency"
description: "Revise laws related to motor vehicle laws for clarity and consistency"
jurisdiction: "us/states/mt"
legislature: "Montana Legislature"
session: "2025"
identifier: "HB 99"
citation: "Montana HB 99 (2025)"
classification: ["bill"]
subjects: ["Motor Vehicles"]
status: "enacted"
primary_sponsors: ["Denise Baum"]
version_count: 28
action_count: 38
vote_count: 6
first_action: "2024-09-05T22:47:07+00:00"
last_action: "2025-04-03T16:15:56+00:00"
source: "openstates"
source_identifier: "ocd-bill/16f3626d-6643-41d3-b591-0ccbafb4dcff"
source_url: "https://bills.legmt.gov/#/laws/bill/2/LC0170?open_tab=sum"
source_hash: "f7fc65c448e8318ee1156445fe5fa9c74dea2f855923db4bc3cee1bd9a2e66ec"
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-mt"]
---

# Montana HB 99 (2025) — Revise laws related to motor vehicle laws for clarity and consistency

## Version chain

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

1. **HB0099_1(1).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=269243)
2. **HB0099_1(2).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=275123)
3. **HB0099_1(3).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=276192)
4. **HB0099_1(4).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=276841)
5. **HB0099_1(5).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=276955)
6. **HB0099_1(6).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=281728)
7. **HB0099_1(7).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=294789)
8. **HB0099_1(8).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=294790)
9. **HB0099_1.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=269242)
10. **HB0099_X(1).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=294806)
11. **HB0099_X(10).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=304705)
12. **HB0099_X(11).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=304706)
13. **HB0099_X(12).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=310718)
14. **HB0099_X(13).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=316656)
15. **HB0099_X(14).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=320241)
16. **HB0099_X(15).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=324109)
17. **HB0099_X(16).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=325631)
18. **HB0099_X(17).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=327259)
19. **HB0099_X(2).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=294807)
20. **HB0099_X(3).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=294815)
21. **HB0099_X(4).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=294889)
22. **HB0099_X(5).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=294890)
23. **HB0099_X(6).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=294892)
24. **HB0099_X(7).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=294896)
25. **HB0099_X(8).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=295366)
26. **HB0099_X(9).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=304704)
27. **HB0099_X.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=294792)
28. **LC0170.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=267367)

## Votes

- Do Pass — **99–1** (pass) · lower
- be_concurred_in — **8–0** (pass) · upper
- Do Concur — **41–8** (pass) · upper
- Do Pass — **98–1** (pass) · lower
- do_pass — **14–0** (pass) · lower
- Do Concur — **37–12** (pass) · upper

## Sponsors

- Denise Baum — primary (person)

## Timeline

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

- **2024-09-05T22:47:07+00:00** (LC) Drafter Assigned
- **2024-11-19T18:23:06+00:00** (LC) Draft in Legal Review
- **2024-11-19T20:38:36+00:00** (LC) Drafter Assigned
- **2024-11-26T19:48:58+00:00** (LC) Draft in Legal Review
- **2024-11-26T21:34:43+00:00** (LC) Draft in Edit
- **2024-12-02T20:18:40+00:00** (LC) Drafter Assigned
- **2024-12-02T21:52:43+00:00** (LC) Draft in Edit
- **2024-12-10T17:10:45+00:00** (LC) Draft in Input/Proofing
- **2024-12-10T23:43:41+00:00** (LC) Draft in Assembly
- **2024-12-11T16:22:28+00:00** (LC) Draft Ready for Delivery
- **2024-12-16T21:52:32+00:00** (LC) Draft Delivered to Requester
- **2024-12-16T21:53:00+00:00** (H) Introduced
- **2024-12-20T22:14:02+00:00** (H) Referred to Committee - (H) Transportation `referral-committee`
- **2025-01-06T18:26:00+00:00** (H) First Reading `reading-1`
- **2025-01-11T00:15:03+00:00** (H) Hearing - (H) Transportation
- **2025-01-16T00:14:54+00:00** (H) Committee Executive Action--Bill Passed - (H) Transportation `committee-passage`
- **2025-01-16T20:20:54+00:00** (H) Committee Report--Bill Passed - (H) Transportation `committee-passage`
- **2025-01-21T20:00:00+00:00** (H) Scheduled for 2nd Reading `reading-2`
- **2025-01-21T20:29:00+00:00** (H) 2nd Reading Passed `reading-2, reading-2`
- **2025-01-22T20:00:00+00:00** (H) Scheduled for 3rd Reading `reading-3`
- **2025-01-22T21:27:00+00:00** (H) 3rd Reading Passed `passage, reading-3`
- **2025-01-22T22:00:00+00:00** (H) Transmitted to Senate
- **2025-01-23T20:38:56+00:00** (S) First Reading `reading-1`
- **2025-02-04T17:46:22+00:00** (S) Referred to Committee - (S) Highways and Transportation `referral-committee`
- **2025-02-04T18:04:52+00:00** (S) Hearing - (S) Highways and Transportation
- **2025-02-12T22:36:00+00:00** (S) Committee Executive Action--Bill Concurred - (S) Highways and Transportation
- **2025-02-13T20:13:00+00:00** (S) Committee Report--Bill Concurred - (S) Highways and Transportation
- **2025-03-15T14:30:00+00:00** (S) Scheduled for 2nd Reading `reading-2`
- **2025-03-15T15:23:00+00:00** (S) 2nd Reading Concurred `reading-2, reading-2`
- **2025-03-17T19:00:00+00:00** (S) Scheduled for 3rd Reading `reading-3`
- **2025-03-17T20:07:00+00:00** (S) 3rd Reading Concurred `passage, reading-3`
- **2025-03-17T20:07:51+00:00** (H) Sent to Enrolling
- **2025-03-18T17:43:55+00:00** (H) Returned from Enrolling
- **2025-03-21T23:00:36+00:00** (H) Signed by Speaker `passage`
- **2025-03-24T23:00:15+00:00** (S) Signed by President `passage`
- **2025-03-25T15:11:00+00:00** (H) Transmitted to Governor `executive-receipt`
- **2025-04-03T15:00:00+00:00** (H) Signed by Governor `executive-signature`
- **2025-04-03T16:15:56+00:00** Chapter Number Assigned `became-law`

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/16f3626d-6643-41d3-b591-0ccbafb4dcff`. Confidence: reported (aggregated from official Montana legislature records).