New Colorado law excludes trucks from some left lanes, expands chain use - Truckers News
Colorado's new law restricts trucks from using left lanes on certain highways and expands chain requirements during winter months.
Aforeworn detected this change in the Trucking / FMCSA Compliance space on July 8, 2026 and published this briefing so affected operators are forewarned rather than caught off guard. It is rated Medium urgency. Truck operators and fleets operating in Colorado, especially on I-70 and other designated highways. should confirm how it applies to their specific situation before acting. There is a time constraint attached: Effective immediately; enforcement begins with warning period, but full penalties apply after 30 days.. 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
Trucks are now prohibited from using the left lane on segments of I-70 and other roads; chain requirements are expanded to include more highways and conditions.
Who it affects
Truck operators and fleets operating in Colorado, especially on I-70 and other designated highways.
What you must do
Update routing and lane usage policies; ensure chains are carried and used as per new regulations.
Deadline
Effective immediately; enforcement begins with warning period, but full penalties apply after 30 days.
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