DOT Finally Proposes Truck Speed-Limiter Rule - Heavy Duty Trucking
DOT proposes a rule requiring speed limiters on heavy trucks, set to 65 mph or lower, affecting all commercial motor vehicles over 26,000 lbs.
Aforeworn detected this change in the Trucking / FMCSA Compliance space on July 6, 2026 and published this briefing so affected operators are forewarned rather than caught off guard. It is rated Medium urgency. All motor carriers operating trucks over 26,000 lbs, including owner-operators, small fleets, and large carriers. should confirm how it applies to their specific situation before acting. There is a time constraint attached: Comment period ends 60 days after publication in Federal Register; final rule compliance date TBD.. Acting after that point can mean penalties, a lapsed licence, or lost eligibility — exactly the kind of surprise Aforeworn exists to prevent. Aforeworn monitors Trucking / FMCSA Compliance continuously and turns every detected change into a plain-English briefing like this one, so you always know first. Forewarned is forearmed.
What changed
DOT proposed a rule mandating speed limiters set to a maximum of 65 mph on heavy trucks.
Who it affects
All motor carriers operating trucks over 26,000 lbs, including owner-operators, small fleets, and large carriers.
What you must do
Review current fleet speed limiter settings and prepare for mandatory compliance; submit comments on the proposed rule.
Deadline
Comment period ends 60 days after publication in Federal Register; final rule compliance date TBD.
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