---
type: "Bill"
title: "Revise laws related to highways and transportation for clarity and consistency"
description: "Revise laws related to highways and transportation for clarity and consistency"
jurisdiction: "us/states/mt"
legislature: "Montana Legislature"
session: "2025"
identifier: "HB 42"
citation: "Montana HB 42 (2025)"
classification: ["bill"]
subjects: ["Highways and Roads"]
status: "enacted"
primary_sponsors: ["Denise Baum"]
version_count: 51
action_count: 42
vote_count: 6
first_action: "2024-09-05T22:45:39+00:00"
last_action: "2025-03-04T22:05:01+00:00"
source: "openstates"
source_identifier: "ocd-bill/215f12d0-510f-471b-a969-b232254649eb"
source_url: "https://bills.legmt.gov/#/laws/bill/2/LC0169?open_tab=sum"
source_hash: "1c3dc7df80b3b7de700743f5f88ef22fe07a011289fb02e65b5cada7c403bd39"
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 42 (2025) — Revise laws related to highways and transportation for clarity and consistency

## Version chain

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

1. **HB0042.001.001_Amendments-in-Context_final-full.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=271204)
2. **HB0042.001.002_Amendments-in-Context_final-full.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=271657)
3. **HB0042_1(1).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=267410)
4. **HB0042_1(2).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=272084)
5. **HB0042_1(3).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=272085)
6. **HB0042_1(4).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=272086)
7. **HB0042_1(5).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=272087)
8. **HB0042_1(6).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=275282)
9. **HB0042_1(7).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=276338)
10. **HB0042_1.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=267243)
11. **HB0042_2(1).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=272092)
12. **HB0042_2(10).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=276480)
13. **HB0042_2(11).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=277216)
14. **HB0042_2(12).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=284064)
15. **HB0042_2(2).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=272101)
16. **HB0042_2(3).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=272102)
17. **HB0042_2(4).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=272142)
18. **HB0042_2(5).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=272143)
19. **HB0042_2(6).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=272144)
20. **HB0042_2(7).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=273227)
21. **HB0042_2(8).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=273416)
22. **HB0042_2(9).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=275432)
23. **HB0042_2.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=272089)
24. **HB0042_3(1).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=284065)
25. **HB0042_3(10).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=292362)
26. **HB0042_3(11).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=292363)
27. **HB0042_3(2).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=284066)
28. **HB0042_3(3).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=284080)
29. **HB0042_3(4).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=284081)
30. **HB0042_3(5).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=284088)
31. **HB0042_3(6).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=284091)
32. **HB0042_3(7).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=284092)
33. **HB0042_3(8).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=284101)
34. **HB0042_3(9).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=284102)
35. **HB0042_3.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=284063)
36. **HB0042_X(1).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=295342)
37. **HB0042_X(10).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=321313)
38. **HB0042_X(11).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=324577)
39. **HB0042_X(12).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=325630)
40. **HB0042_X(13).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=326971)
41. **HB0042_X(14).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=327841)
42. **HB0042_X(2).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=296037)
43. **HB0042_X(3).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=296038)
44. **HB0042_X(4).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=297391)
45. **HB0042_X(5).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=297393)
46. **HB0042_X(6).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=297394)
47. **HB0042_X(7).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=310574)
48. **HB0042_X(8).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=316536)
49. **HB0042_X(9).pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=320143)
50. **HB0042_X.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=294175)
51. **LC0169.pdf** (committee substitute) — [source](https://api.legmt.gov/docs/v1/documents/getContent?documentId=265379)

## Votes

- Do Concur — **46–4** (pass) · upper
- be_concurred_in — **8–0** (pass) · upper
- Do Concur — **44–6** (pass) · upper
- Do Pass — **99–0** (pass) · lower
- do_pass_as_amended — **14–0** (pass) · lower
- Do Pass — **99–0** (pass) · lower

## Sponsors

- Denise Baum — primary (person)

## Timeline

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

- **2024-09-05T22:45:39+00:00** (LC) Drafter Assigned
- **2024-10-02T16:23:39+00:00** (LC) Draft in Legal Review
- **2024-10-23T13:54:00+00:00** (LC) Draft in Edit
- **2024-11-13T12:22:23+00:00** (LC) Draft in Input/Proofing
- **2024-11-14T17:32:48+00:00** (LC) Draft in Final Drafter Review
- **2024-11-17T16:25:09+00:00** (LC) Draft in Assembly
- **2024-11-18T20:19:12+00:00** (LC) Draft Ready for Delivery
- **2024-12-09T16:06:36+00:00** (LC) Draft Delivered to Requester
- **2024-12-09T17:55:00+00:00** (H) Introduced
- **2024-12-18T20:47:47+00:00** (H) Fiscal Note Requested
- **2024-12-20T22:11:49+00:00** (H) Referred to Committee - (H) Transportation `referral-committee`
- **2025-01-06T17:40:00+00:00** (H) First Reading `reading-1`
- **2025-01-07T15:17:29+00:00** (H) Fiscal Note Received `receipt`
- **2025-01-07T19:57:55+00:00** (H) Fiscal Note Signed
- **2025-01-07T23:47:18+00:00** (H) Fiscal Note Printed
- **2025-01-11T00:15:01+00:00** (H) Hearing - (H) Transportation
- **2025-01-16T00:14:53+00:00** (H) Committee Executive Action--Bill Passed as Amended - (H) Transportation `committee-passage`
- **2025-01-16T20:18:56+00:00** (H) Committee Report--Bill Passed as Amended - (H) Transportation `committee-passage`
- **2025-01-16T22:28:38+00:00** (H) Revised Fiscal Note Requested
- **2025-01-20T20:00:00+00:00** (H) Scheduled for 2nd Reading `reading-2`
- **2025-01-20T20:30:00+00:00** (H) 2nd Reading Passed `reading-2, reading-2`
- **2025-01-21T14:43:00+00:00** (H) Revised Fiscal Note Received `receipt`
- **2025-01-21T20:00:00+00:00** (H) Scheduled for 3rd Reading `reading-3`
- **2025-01-21T21:22:00+00:00** (H) 3rd Reading Passed `passage, reading-3`
- **2025-01-21T21:48:49+00:00** (H) Transmitted to Senate
- **2025-01-22T15:44:56+00:00** (H) Revised Fiscal Note Printed
- **2025-01-22T20:36:29+00:00** (S) First Reading `reading-1`
- **2025-01-24T19:37:25+00:00** (S) Referred to Committee - (S) Highways and Transportation `referral-committee`
- **2025-01-25T01:29:17+00:00** (S) Hearing - (S) Highways and Transportation
- **2025-01-30T00:37:00+00:00** (S) Committee Executive Action--Bill Concurred - (S) Highways and Transportation
- **2025-01-30T21:52:00+00:00** (S) Committee Report--Bill Concurred - (S) Highways and Transportation
- **2025-02-15T15:00:00+00:00** (S) Scheduled for 2nd Reading `reading-2`
- **2025-02-15T17:40:00+00:00** (S) 2nd Reading Concurred `reading-2, reading-2`
- **2025-02-18T20:00:00+00:00** (S) Scheduled for 3rd Reading `reading-3`
- **2025-02-18T22:31:00+00:00** (S) 3rd Reading Concurred `passage, reading-3`
- **2025-02-18T22:31:41+00:00** (H) Sent to Enrolling
- **2025-02-20T18:00:00+00:00** (H) Returned from Enrolling
- **2025-02-26T16:46:00+00:00** (H) Signed by Speaker `passage`
- **2025-02-26T18:54:59+00:00** (S) Signed by President `passage`
- **2025-02-26T19:30:20+00:00** (H) Transmitted to Governor `executive-receipt`
- **2025-03-04T20:45:14+00:00** (H) Signed by Governor `executive-signature`
- **2025-03-04T22:05:01+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/215f12d0-510f-471b-a969-b232254649eb`. Confidence: reported (aggregated from official Montana legislature records).