Big rigs banned from left lane on parts of I-70 in Colorado starting in August - CDLLife
Starting August 2024, big rigs (trucks over 26,000 lbs) are banned from the left lane on certain sections of I-70 in Colorado. This is a state-level traffic regulation, not a federal FMCSA rule, but it directly impacts trucking operations on that corridor.
Aforeworn detected this change in the Trucking / FMCSA Compliance space on July 11, 2026 and published this briefing so affected operators are forewarned rather than caught off guard. It is rated Medium urgency. All commercial motor vehicles over 26,000 lbs operating on I-70 in Colorado, especially owner-operators and small fleets that may not have real-time route updates. should confirm how it applies to their specific situation before acting. There is a time constraint attached: Before August 2024 (exact date not specified in excerpt; check CDOT for precise start date).. 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
Colorado Department of Transportation (CDOT) has implemented a left-lane restriction for big rigs on specific segments of I-70, effective August 2024.
Who it affects
All commercial motor vehicles over 26,000 lbs operating on I-70 in Colorado, especially owner-operators and small fleets that may not have real-time route updates.
What you must do
Update routing and driver instructions to avoid left lane on restricted I-70 segments; ensure drivers are aware of the new signage and enforcement.
Deadline
Before August 2024 (exact date not specified in excerpt; check CDOT for precise start date).
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