# Montana HB 312: Revise speed limit laws

Montana HB 312, Revise speed limit laws, is a 69th Legislature, Regular Session (2025) House bill sponsored by Jedediah Hinkle (Republican); status signed, last action 2025-05-05 (Chapter Number Assigned); PRIA reads it as touching household money (as of 2026-10-19).

- Canonical: https://policyrisk.com/state-bill/MT-HB312-2025
- As of: 2026-10-19
- Plain-text twin of the page above; the HTML and this file carry the same facts.

## Facts
- Bill: Montana HB 312
- State: Montana
- Session: 69th Legislature, Regular Session (2025)
- Title: Revise speed limit laws
- Status: signed
- Chamber: House
- Introduced: 2025-01-24
- Last action: 2025-05-05, Chapter Number Assigned
- Sponsor: Jedediah Hinkle (Republican)
- Cosponsors: 1
- Subjects: Motor Vehicles, Traffic Regulations
- Touches household money: yes
- Roll calls: 4 (241 yes, 57 no in all)
- Economic provisions PRIA read: 3

## Summary

No summary available.

## Bill overview: provisions PRIA read

- Minor speeding not on your record: benefit, low. Small overages under this speed‑limit law are not crimes. If you are no more than 10 mph over in daytime or 5 mph at night, the ticket generally is not recorded and cannot be used to raise your insurance. This does not apply if you were going 90+ mph on an interstate, hold a commercial driver’s lic…
- Speeding ticket fines by mph over: cost, low. Fines rise with how many mph you are over the limit. On interstates, 1–10 mph over is $40. On other highways and special‑speed zones, 1–10 mph over is $20. For all categories, 11–20 mph over is $70, 21–30 is $120, and 31+ is $200. These are one‑time fines per ticket.
- New Montana highway speed limits: mixed, medium. The law sets clear speed limits by road and time of day. Interstates are 80 mph outside urbanized areas and 65 mph inside urbanized areas of 50,000 people or more. On national highways that are four lanes and at least 10 miles long, the limit is 75 mph in daytime and 70 mph at night. These higher f…

## Sponsors and cosponsors

- Sponsor: Jedediah Hinkle (Republican), House
- Cosponsor: Mary Ann Dunwell (Democrat), Senate

## Roll call votes

| Date | Chamber | Motion | Result | Yes | No | Other |
| --- | --- | --- | --- | --- | --- | --- |
| 2025-04-10 | Senate | Do Concur | pass | 44 | 4 |   |
| 2025-04-08 | Senate | Do Concur | pass | 43 | 7 |   |
| 2025-02-12 | House | Do Pass | pass | 78 | 22 |   |
| 2025-02-11 | House | Do Pass | pass | 76 | 24 |   |

## Actions (28)

- 2025-05-05: Chapter Number Assigned (House)
- 2025-05-01: Signed by Governor (House)
- 2025-04-22: Transmitted to Governor (House)
- 2025-04-22: Signed by President (Senate)
- 2025-04-18: Signed by Speaker (House)
- 2025-04-11: Returned from Enrolling (House)
- 2025-04-10: Sent to Enrolling (House)
- 2025-04-10: 3rd Reading (Senate)
- 2025-04-08: 2nd Reading (Senate)
- 2025-03-20: Committee Report (Senate)
- 2025-03-19: Committee Executive Action (Senate)
- 2025-02-20: Hearing (Senate)
- 2025-02-18: Referred to Committee (Senate)
- 2025-02-13: 1st Reading (Senate)
- 2025-02-12: Transmitted to Senate (House)
- 2025-02-12: 3rd Reading (House)
- 2025-02-11: 2nd Reading (House)
- 2025-02-06: Committee Report (House)
- 2025-02-05: Committee Executive Action (House)
- 2025-02-05: Committee Executive Action (House)
- 2025-02-03: Fiscal Note Printed (House)
- 2025-02-03: Fiscal Note Unsigned (House)
- 2025-01-31: Fiscal Note Received (House)
- 2025-01-30: Hearing (House)
- 2025-01-27: 1st Reading (House)
- 2025-01-27: Referred to Committee (House)
- 2025-01-24: Fiscal Note Requested (House)
- 2025-01-24: Introduced (House)

## Bill text

- Enrolled, 2025-04-15: [PDF](https://docs.legmt.gov/download-ticket?ticketId=b1975d82-fd23-4f6c-9709-38d996d7732c)
- As Amended (Version 2), 2025-02-06: [PDF](https://docs.legmt.gov/download-ticket?ticketId=88d36a2c-243e-420d-9af2-db035e94f103)
- Introduced, 2025-01-24: [PDF](https://docs.legmt.gov/download-ticket?ticketId=146180e1-9b54-47f2-a3c2-0447860a2bfd)

## Related bills

- SB 437: Revise definition of sex in Montana law (signed)
- HB 831: Increase elderly homeowner and renter income tax credit (vetoed)
- HB 628: Revise early literacy targeted intervention laws (vetoed)
- SB 410: Provide for Montana genomic security act (vetoed)
- SB 422: Generally revise laws relating to insurance coverage relating to cancer (vetoed)
- SB 424: Revising the disabled veteran property tax assistance program (vetoed)

## Sources
- [Enrolled (PDF)](https://docs.legmt.gov/download-ticket?ticketId=b1975d82-fd23-4f6c-9709-38d996d7732c)
- [As Amended (Version 2) (PDF)](https://docs.legmt.gov/download-ticket?ticketId=88d36a2c-243e-420d-9af2-db035e94f103)
- [Introduced (PDF)](https://docs.legmt.gov/download-ticket?ticketId=146180e1-9b54-47f2-a3c2-0447860a2bfd)

## Related
- [SB 437: Revise definition of sex in Montana law](https://policyrisk.com/state-bill/MT-SB437-2025)
- [HB 831: Increase elderly homeowner and renter income tax credit](https://policyrisk.com/state-bill/MT-HB831-2025)
- [HB 628: Revise early literacy targeted intervention laws](https://policyrisk.com/state-bill/MT-HB628-2025)
- [SB 410: Provide for Montana genomic security act](https://policyrisk.com/state-bill/MT-SB410-2025)
- [SB 422: Generally revise laws relating to insurance coverage relating to cancer](https://policyrisk.com/state-bill/MT-SB422-2025)
- [SB 424: Revising the disabled veteran property tax assistance program](https://policyrisk.com/state-bill/MT-SB424-2025)
- [Montana bills](https://policyrisk.com/states/montana/bills)
- [Montana state hub](https://policyrisk.com/states/montana)
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Source: PRIA, https://policyrisk.com/state-bill/MT-HB312-2025 (as of 2026-10-19).