Senate committee advances bill requiring human oversight for the largest autonomous semis

The Senate Transportation & Energy Committee on Tuesday advanced House Bill 1286, a measure that would require a holder of a commercial driver—s license to be physically present in the cab of autonomous commercial motor vehicles weighing more than 26,001 pounds.

Sponsor Senator Liston told the panel the bill aims to preserve safety on Colorado—s challenging terrain and unpredictable weather and noted recent house amendments that place penalties in statute and add a five-year sunset so the law can be revisited in 2031. "The bill once again in its current form ensures Colorado remains a leader not only in innovation, but in safety and responsibility," the sponsor said.

The Colorado Department of Transportation told the committee it is opposed to a blanket operator requirement. Emily Hathaway of CDOT said the agency supports a pathway for deployment under a regulatory structure instead of an across-the-board operator mandate and urged the committee to consider pre-authorization and stricter safety standards: "Establishing a path forward for operating these vehicles while ensuring they meet stringent safety standards is a solution our agencies would support, but we are unsupportive of the bill in its current form."

The Colorado State Patrol also opposed the bill in its present form. Capt. Gabe Easton, motor carrier safety section, cited Colorado—s road fatalities and said the patrol values partnerships with industry while seeking to avoid gaps that could increase risk: "Last year in Colorado, over 700 people died on our roadways. The main factor in all of those crashes is human error."

Industry representatives urged the committee to reject the measure. Megan McKillop, a contract lobbyist for the Autonomous Vehicle Industry Association, said the bill would make Colorado a national outlier and foreclose opportunities the technology may bring for safety and efficiency: "This bill would undermine Colorado's existing framework for autonomous vehicles established nearly a decade ago."

Union and driver witnesses urged passage. Tammy Munoz of Teamsters Local 455 emphasized the bill—s economic and safety goals and warned of job displacement without protections: "HB1286 is not an either-or bill. It's an and bill, one that addresses both public safety risk of fully autonomous semis operating on Colorado highways and the economic consequences of displaced trained drivers." Dennis Daugherty, speaking for the Colorado AFL-CIO, testified about worst-case failure modes and roadside safety tasks that currently require a person in the vehicle. Professional driver testimony underscored concerns about extreme weather and chain-up tasks.

After sponsor remarks, Senator Winstead moved to advance HB1286 to the Committee on Appropriations with a favorable recommendation. The roll call recorded votes consistent with the transcript; the motion carried 5 to 3 and the committee advanced the bill.

The bill will next be considered by the Appropriations Committee.