Chain Law Starts Sept. 1 on Colorado's I-70 - Heavy Duty Trucking
Colorado's I-70 chain law starts Sept. 1, requiring commercial vehicles to carry chains 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 High urgency. Truck operators on Colorado's I-70 corridor should confirm how it applies to their specific situation before acting. There is a time constraint attached: September 1, 2025. 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. Regulated niches like Trucking / FMCSA Compliance move faster than most operators can track by hand, which is why Aforeworn watches the official sources for you and flags every material change the moment it appears.
What changed
New chain law effective Sept. 1 mandates chains for commercial vehicles during winter conditions.
Who it affects
Truck operators on Colorado's I-70 corridor
What you must do
Ensure chains are onboard and comply with traction laws.
Deadline
September 1, 2025
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