Montana legislation · 2025 Regular Session
Montana HB312: Revise speed limit laws
Status: Signed into law, May 5, 2025
What the bill says
An act revising speed limit laws; increasing daytime and nighttime speed limits on national highways that have been expanded to four lanes; providing an exception for special speed zones; and amending sections 61-8-303 and 61-8-725, mca.
From the engrossed text:
AN ACT REVISING SPEED LIMIT LAWS; INCREASING DAYTIME AND NIGHTTIME SPEED LIMITS ON NATIONAL HIGHWAYS THAT HAVE BEEN EXPANDED TO FOUR LANES; PROVIDING AN EXCEPTION FOR SPECIAL SPEED ZONES; AND AMENDING SECTIONS 61-8-303 AND 61-8-725, MCA. Section 1. Section 61-8-303, MCA, is amended to read: "61-8-303. Speed restrictions. (1) Except as provided in 61-8-309, 61-8-310, and 61-8-312, the speed limit for vehicles traveling: (a) on an interstate highway outside an urbanized area of 50,000 population or more is 80 miles an hour at all times and the speed limit for vehicles traveling on interstate highways within an urbanized area of 50,000 population or more is 65 miles an hour at all times; (b) on any portion of a national highway that is 10 miles or greater that has been expanded to four lanes, and that is not subject to a permanent special speed zone, as provided in 61-8-309 and 61-8-310, is 75 miles an hour during the daytime and 70 miles an hour during the nighttime; (b)(c) on any other public highway of this state is 70 miles an hour during the daytime and 65 miles an hour during the nighttime; (c)(d) in an urban district is 25 miles an hour. (2) A vehicle subject to the speed limits imposed in subsection (1) may exceed the speed limits imposed in …
Sponsors
- Hinkle, Jedediah (R, 67) · primary sponsor
- Dunwell, Mary Ann (D, 42)
Latest actions
- : Chapter Number Assigned
- : (H) Signed by Governor
- : Chapter Number Assigned
- : (H) Signed by Governor
- : (H) Transmitted to Governor
- : (S) Signed by President
- : (H) Signed by Speaker
- : (H) Returned from Enrolling
- : (H) Sent to Enrolling
- : (S) 3rd Reading
Votes
- Do Concur (April 10, 2025): 44 yea, 4 nay, passed
- Do Concur (April 8, 2025): 40 yea, 7 nay, passed
- Do Pass (February 12, 2025): 78 yea, 22 nay, passed
- Do Pass (February 11, 2025): 76 yea, 23 nay, passed
Subjects: Motor Vehicles, Traffic Regulations
Common questions
- What is HB312?
- HB312 is a bill in the Montana Legislature (2025 Regular Session): Revise speed limit laws.
- What does HB312 do?
- In its own words: An act revising speed limit laws; increasing daytime and nighttime speed limits on national highways that have been expanded to four lanes; providing an exception for special speed zones; and amending sections 61-8-303 and 61-8-725, mca.
- What is the status of HB312?
- Signed into law as of May 5, 2025. Latest action: Chapter Number Assigned (May 13, 2025).
- Who sponsored HB312?
- Hinkle, Jedediah (R, 67), with 1 co-sponsor.
- Where is the official record for HB312?
- On the Montana Legislature website: https://bills.legmt.gov/#/laws/bill/2/LC1279
Source: official Montana record. Tracked by Delilah, AI for legislation across all 50 states and Congress.