Senate Bill 67, titled the "Montana Automated Driving Systems Act," allows vehicles equipped with automated driving systems to be used on the public highways of Montana. The bill defines various levels of these systems, from Level 1 (driver assistance) to Level 5 (full automation). It permits Level 1, 2, and 3 automated driving systems without additional restrictions. However, Level 4 and 5 systems are allowed subject to limitations established by the Department of Transportation through rulemaking, which is also granted by the bill. This legislation creates a framework for the use and regulation of autonomous vehicles in the state.
SB 264 amends Montana law concerning motor vehicle exhaust noise. This bill eliminates a specific legal defense for motor vehicle operators cited for exceeding the 95-decibel noise limit. Previously, a driver could not be convicted if they had reasonable grounds to believe their vehicle complied with the noise standard. With this change, that defense is no longer available to those charged with a violation.
SB 428 revises how local authorities and county commissions can set speed limits on roads. It allows local authorities to adjust speed limits in various areas, such as urban districts, outside urban districts, and school zones, typically requiring an engineering and traffic investigation. A key change is that boards of county commissioners can now set certain decreased speed limits on county roads, including in school zones, without first conducting an engineering and traffic investigation. The bill also specifies signage requirements for altered limits and mandates consultation with relevant bodies for school zones.
Senate Joint Resolution 19 (SJ 19) requests an interim study on ways to improve passenger transportation and public transit services throughout Montana. The study aims to benefit various residents, including senior citizens, people with disabilities, students, and tourists, particularly in areas currently underserved by transportation options. It will investigate potential solutions, such as establishing a passenger transportation commission and reviewing laws to accommodate autonomous vehicles. The Legislative Council is requested to assign a committee or staff to conduct this study, with final results and recommendations due to the 70th Legislature by September 15, 2026.
SB 309 eliminates the Scenic-Historic Byways Advisory Council, which was previously responsible for assisting in the design and review of the state's scenic-historic byways program. This council, composed of up to 11 members with expertise in areas like tourism, history, and transportation, also helped develop criteria for designating roads. Under this bill, the Montana Department of Transportation and the commission would no longer have this specific advisory body for these functions. The scenic-historic byways program itself and the commission's authority to designate roads remain in effect.
Montana's SJ 3 is a joint resolution urging the U.S. Congress to revise federal commercial driver's license (CDL) requirements. It specifically requests that Congress exempt small haulers (e.g., pickup trucks carrying nonhazardous materials) and school bus drivers from needing CDLs, citing burdens on small businesses and rural school districts. The resolution does not change any laws but formally asks Congress to adjust federal rules to reduce these requirements. Montana's delegation and relevant federal committees will receive copies of the resolution.
HB 3 is a funding bill that allocates specific amounts to Montana state agencies for the 2024-2025 fiscal year and continues some funding into the 2025-2026 biennium. It provides $22.2 million to the Public Health and Human Services Division, $12.5 million to the State Public Defender's Conflict Division, $4.07 million to the Montana Highway Patrol, and other sums to agencies like Revenue, Corrections, and Fish and Wildlife. The bill directs these funds for existing agency operations, with unspent balances reverting to their respective funds. It became law immediately upon the governor's signature on April 7, 2025, without requiring additional legislative action. This is a routine budget measure affecting state agency operations, not a policy change impacting citizens.
HB 159 revises Montana's rural improvement district laws to explicitly allow districts to be created for maintaining existing public improvements (like roads or drainage systems), not just building new ones. It simplifies the process by removing the need for a petition if all property owners within the proposed district waive their right to protest its creation. The bill also adjusts petition requirements for road maintenance districts, requiring only 50% consent of property area if all roads to be maintained are public improvements. This directly affects rural property owners and county commissioners by making it easier to form districts focused on upkeep rather than new construction.
HB 97 allows trucks to travel in coordinated groups (called "platoons") using technology to maintain closer, synchronized spacing on Montana highways. It requires all drivers operating in a platoon - both the lead vehicle and anyone who can take control - to hold a commercial driver's license (CDL). The Department of Transportation can restrict platooning during dangerous road conditions and must consult stakeholders before creating safety rules. The law applies to trucking companies and drivers on public highways and takes effect July 1, 2025.
HB 43 revises Montana's motor vehicle traffic laws to improve clarity and consistency. It specifically defines "paved shoulder" to allow bicyclists to operate on shoulders (not just paved roads), updates rules for yielding to emergency vehicles, and clarifies when passing school buses is permitted. The bill also reorganizes traffic definitions and amends parking permit rules to better protect accessible parking spaces for people with disabilities. These changes directly affect drivers, cyclists, and emergency responders by standardizing road usage and accessibility requirements. The bill was signed into law by Montana's Governor on March 27, 2025.