Colorado

Truck speed limits in Colorado: Highway 75 mph, Rural 75 mph, Urban 65 mph. Same as passenger vehicles on most routes. Left lane: Trucks banned from continuous left-lane travel on I-70 mountain corridor; $100 fine plus CDL points.

Comprehensive chain law; CMVs over 16,000 lbs must carry chains Sept 1 - May 31; Traction Law and Chain Law on I-70 mountain corridor; fines up to $1,000 Construction: Heavy construction season April-November especially on mountain passes; pilot car requirements common.

I-70 mountain corridor has extensive truck restrictions; Eisenhower Tunnel has hazmat restrictions; steep grades require chain-up areas

Standard federal HOS enforcement; CSP commercial vehicle units active ELD: Full federal ELD mandate compliance required.

High; Colorado State Patrol aggressive on I-70 and I-25; weigh stations active Drug testing: Federal DOT drug testing requirements apply.

Limited in mountain areas; adequate on eastern plains along I-76 and I-70 east

For the most current trucking regulations in Colorado, visit the official enforcement page at https://csp.colorado.gov/commercial-vehicles.