CDL Initial Application Information
- You must hold a valid regular driver license and be at least 18 years old before applying for a CDL
- You will need to visit a driver license office and successfully pass the written tests that apply to the commercial license you desire. The Commercial Driver Handbook is under Driver Education.
- Once you have successfully passed the required exams, purchase a CDL permit for the applicable fee.
- If you'd like to take the written CDL test in Spanish, please let the DMV technician helping you know so they may set the test's language.
Class A - minimum exams required are
- General knowledge
- Combination
- Air brakes (required if driving a vehicle with air brakes)
Class B - minimum exams required are
- General knowledge
- Air brakes (required if driving a vehicle with air brakes)
Class C - minimum exams required are
- General knowledge
- Passenger (required if carrying 16 passengers or more including driver)
- Hazardous materials (required if transporting hazardous materials)
You will be required to
- Show current DOT medical card. Find a FMCSA Certified Medical Examiner in your area
- Proof of current physical Colorado address documents
- Proof of your Social Security number
- Schedule a drive skills test with an approved driving school
- Return to driver license office with your drive skills test completion form and purchase a CDL for the applicable fee.
Other Information
For additional information, call 303-205-5600 or email DOR_cdlunit@state.co.us