Montana transportation laws

What Montana has enacted on transportation, what each law requires, and what the bills still moving would do. Montana is one of 41 states that enacted a transportation law in the 2025 and 2026 sessions.

Bills in scope
20bills in scope
Past committee
5past committee
Most recent action
27 May 2025most recent action

Transportation laws enacted in Montana

5 transportation laws enacted in the Montana Legislature in the 2025 and 2026 sessions, newest first. Each links to the legislature's own page.

  • HB 708Allow all persons serving in the reserves to be eligible for certain CDL waiverEnacted 13 May 2025

    What it requires: The department may waive the skills test, knowledge test, or both for a commercial driver's license if an applicant is a current or former military service member, including persons serving full-time in a reserve component, and meets specified conditions regarding military vehicle operation experience, civilian license history, and driving record.

    Motor carriers and commercial drivers

  • SB 67Provide for the use of autonomous vehiclesEnacted 8 May 2025

    What it requires: Vehicles with automated driving systems level 1, 2, and 3 may be used on Montana public highways. Vehicles with level 4 and 5 systems may be used subject to limitations established by department rulemaking. Cities and towns may regulate traffic on their streets but cannot discriminate against automated vehicles.

    Autonomous trucks and delivery devices

  • SB 23Increase thresholds for railroad accident reporting requirementsEnacted 18 April 2025

    What it requires: A railroad company operating any line of railroad within Montana shall promptly report any accident to the commission. The report must include the time and place of the accident, the names of any persons killed or injured, and the value of any property destroyed. The commission may adopt rules to set reporting thresholds.

    Freight rail

  • SB 22Revise class d motor carrier deadline adjustment lawsEnacted 4 April 2025

    What it requires: The commission must set a hearing on a motor carrier certificate application for not later than 90 days after receipt of a protest or hearing request, extending the previous 60-day deadline. The commission may deny a Class D motor carrier application without a public hearing if prior investigation found public convenience and necessity do not require the service, unless the applicant presents facts showing material changes in conditions.

    Motor carriers and commercial drivers

  • HB 97Allow for platooning vehiclesEnacted 3 April 2025

    What it requires: The person conducting the leading vehicle of a platoon must have a commercial driver's license. Any person in a position to take control of a vehicle in a platoon must have a commercial driver's license. Platooning is generally allowed on public highways of Montana but may be restricted during dangerous road conditions.

    Autonomous trucks and delivery devices

Transportation in Montana, by topic

Transportation bills in Montana

The bills not yet law, furthest along first, with what each would do.

5Enacted

15Introduced or inactive

20 bills in scope

Introduced or inactive

15

LC 2805Generally revise oversize load lawsDeadLC 3026Generally revise gross vehicle weight lawsDeadLC 3495Allow autonomous trucks and automobiles to operate with restrictions in MontanaDead
SB 454Revise tow truck regulation lawsDead

What it would do: Revises Montana commercial tow truck laws by modifying definitions, reducing classification standards from five to three classes with updated equipment ratings, increasing liability insurance requirements, revising inspection procedures, and establishing detailed requirements for participation in the state law enforcement rotation system.

LC 3651Revise requirements for Class D motor carriersDead
SB 24Increase penalties for blocked railroad crossingsDead

What it would do: Increases penalties for corporations, associations, or companies that willfully obstruct public highway railroad crossings from a fine of not less than $25 or more than $100 to not less than $750 or more than $1,500.

HB 223Revise motor vehicle insurance laws to include commercial to truck costsDead

What it would do: Requires motor vehicle liability insurance policies to cover costs for recovery and debris cleanup services provided by commercial tow truck operators at accident scenes, effective for policies issued or renewed on or after October 1, 2025.

HB 103Creating a railroad track inspection programDead

What it would do: Creates a Montana rail inspection program requiring the Public Service Commission to employ five inspectors and additional staff. Establishes a special revenue account funded by eight percent of railroad car company property taxes to support the program.

HB 517Revising classification and motor carrier certificate lawsDead

What it would do: Amends Montana law to require Class D motor carriers to file applications with the commission and prohibits a motor carrier from possessing or operating a Class D certificate unless it regularly transports garbage as part of its usual business operations.

HB 596Revise regulations relating to motor carriers hauling trashIn committee

What it would do: Exempts persons or entities providing irregular garbage cleanup and transportation service under one-time service agreements from Class D motor carrier certificate requirements, provided they do not use vehicles requiring a commercial driver's license.

LC 1996Revise tow truck regulation lawsIntroduced

What it would do: Revises Montana commercial tow truck regulations by updating equipment classification standards, increasing liability insurance requirements, establishing training requirements for tow truck operators, and modifying requirements for participation in the state law enforcement rotation system.

LC 4217Allow all persons serving in the reserves to be eligible for certain CDL waiverIntroduced

What it would do: Amends Montana law to expand commercial driver's license test waivers to include all persons currently serving in a reserve component, in addition to those on active duty or honorably discharged from the armed forces or reserves.

LC 858Revise regulations relating to motor carriers hauling trashIntroduced

What it would do: Exempts persons or entities providing irregular garbage cleanup and transportation service with one-time service agreements from needing a Class D motor carrier certificate, provided they do not use vehicles requiring a commercial driver's license.

LC 3649Revising classification and motor carrier certificate lawsIntroduced

What it would do: Amends Montana law to require that Class D motor carriers intending to obtain or hold a certificate of public convenience and necessity must engage in garbage transportation on a regular basis as part of their usual business operation.

LC 263Revise motor vehicle insurance laws to include commercial to truck costsIntroduced

What it would do: Requires motor vehicle liability insurance policies to cover costs for recovery and debris cleanup services provided by commercial tow truck operators arising from accidents, effective for policies issued or renewed on or after October 1, 2025.

Bill titles link to the Montana Legislature's own page.

What LawSignals covers

What counts as transportation legislation

In scope: Motor carriers and commercial drivers; truck size, weight and road use; truck and fleet emissions; hazardous materials transport; freight rail; ports, maritime and freight corridors; warehouses and delivery; and autonomous trucks and delivery devices.

Questions

Does Montana have a transportation law?

Yes. Montana enacted 5 transportation laws in the 2025 and 2026 sessions, among them HB 708, SB 67 and SB 23. Each is listed on this page with what it requires.

What does Montana legislate on most in transportation?

Motor carriers and commercial drivers (10 bills), Autonomous trucks and delivery devices (3 bills) and Freight rail (3 bills).

Are these summaries reviewed by a lawyer?

No. Which bills count as Transportation bills, and the line on what each law requires or each bill would do, are drafted by software from the bill's own text and not reviewed by an attorney. Every bill links to the legislature's own record: read the text before relying on it. The list covers bills from the 2025 and 2026 sessions.

Know when Montana's transportation law changes

An alert when a bill moves, and one report a month on what changed in every state and Congress.