https://www.colorado.gov/pacific/dmv...al-information
You must have a valid Commercial Driver License (CDL) to operate
Any commercial motor vehicle with a Gross Vehicle Weight Rating (GVWR) of 26,001 pounds or more
Any commercial vehicle that is designed to transport 16 or more passengers, including the driver
Any vehicle transporting hazardous material and is required to be placarded in accordance with 49 CFR Part 172, Subpart F
What do I Need to Obtain a CDL?
Valid driver license from Colorado or another state or a commercial permit
Current DOT medical card - find a FMCSA Certified Medical Examiner in your area
Your Social Security number
Commercial drive skills test completion form dated within 60 days (if turning your commercial instruction permit into a CDL)
If you want to add a HAZMAT endorsement on your CDL, you will need to successfully pass the HAZMAT written exam and provide a current TSA background check every time you purchase a CDL
Applicable fee
Classes of Commercial Licenses
Class A - combination vehicles - consists of any combination of vehicles with a Gross Combination Weight Rating (GCWR) of 26,001 pounds or more provided the GVWR of the vehicle(s) being towed is in excess of 10,000 pounds
Class B - straight trucks and light combinations - consists of any single vehicle with a GVWR of 26,001 pounds or more or any such vehicle towing a vehicle which does not have a GVWR in excess of 10,000 pounds
Class C - single vehicles less than 26,001 GVWR - consists of any single vehicle or combination of vehicles that do not meet the definition of a Class A or B commercial vehicle, but that transports 16 or more passengers (including the driver) OR is placarded for transportation of hazardous materials
Which vehicles are exempt from requiring a CDL?
Recreational vehicles such as a motorhome
Military vehicles driven by military personnel
Firefighting equipment
Emergency snow plows used during emergency snow removal operations
Farm vehicles when controlled and operated by a farmer within 150 miles of the person’s farm