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Colorado CDL Requirements | DMV Locations
Fees | Forms | FAQs | FREE CDL INFO
Colorado
CDL Practice Test Prep Program
Colorado CDL Requirements | DMV Locations
Fees | Forms | FAQs | FREE CDL INFO

If you are not a resident of COLORADO please
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Colorado CDL Requirements | DMV Locations Fees | Forms | FAQs | FREE CDL INFO

Find official Colorado CDL test requirements to get your CO CDL - FREE information - FAST and EFFICIENT.

Do you already know what you need? You may choose individual Modules or Bundles. If your individual selections cost more than $39.95 - you will automatically be put into the SUPER BUNDLE . . . it includes EVERYTHING! If you need help choosing the right product for your needs, use the free Selector Tool. You NEVER have to pay more than $39.95.

Colorado CDL Test Selector Tool
Colorado
CDL Test Selector Tool
(Use only for a new CDL)
Not sure which CO CDL Tests you need to pass? Use this tool to determine what Class of CDL and which CDL Endorsements you require.

Jump to official Colorado CDL website information.

Colorado CDL Info | Colorado CDL Requirements

Colorado CDL Initial Application Information

How do I get a Colorado CDL for the first time?
  • You must hold a valid regular driver's license and be at least 18 years old before applying for a CDL
  • CDL school is not required, but recommended
  • You will need to visit a driver's license office and successfully pass the written tests that apply to the commercial license you desire. Click here to view CDL manual.
  • Once you have successfully passed the required exams, purchase a CDL permit ($14.00)
Colorado CDL Application Procedure:
  • Show current DOT medical card. Click here to find a FMCSA Certified Medical Examiner in your area
  • Show proof of address, click here for list of acceptable documents
  • Show your original, non-laminated Social Security card or know your Social Security number
  • Schedule a drive skills test with an approved driving school
  • Return to driver's license office with your drive skills test completion form and purchase a CDL ($35.00 or $37.00 if you have a motorcycle endorsement)

Will My CDL Transfer From Another State?

All valid (expired less than 1 year) out of state CDLs will transfer to Colorado. All endorsements with exception of the H, X, and S will also transfer. Out of state CDL permits do not transfer to Colorado and require retesting.

Colorado CDL Written Knowledge Tests
You will need to pass the Colorado Knowledge Tests that are required for the class of license, restriction, and endorsements you wish to possess. A general knowledge test for the Class A or Class B and C license must be successfully completed by all CDL applicants. The information needed to pass these tests is contained in the FREE Colorado CDL Handbook. Please read and study this manual carefully.
  • Class A - 70 Questions (50 GK + 20 Combination Vehicles) - Skills test required.
  • Class B - 50 Questions - Skills test required.
  • Class C - 50 Questions - Skills test required for bus, school bus and air brakes vehicles..
  • Passenger Endorsement - 20 questions - Skills test required in bus.
  • School Bus Endorsement - 25 questions - Skills test required in school bus.
  • Doubles/Triples Endorsement - 20 questions - No additional skills tests.
  • Tank Vehicle Endorsement - 20 questions - No additional skills tests.
  • Hazardous Materials Endorsement - 30 questions - No additional skills tests.
  • Air Brake Restriction Removal - 25 questions - Additional skills test in vehicle with Air Brakes.

Quickly access the most complete and accurate Official Colorado CDL Information

Colorado CDL Information
Access to official web pages maintained
by the State of Colorado

Access Official Federal CDL General Information

Access Official Federal CDL Medical Requirements Info

Access Official Federal CDL Hazardous Materials Info

Classes of Colorado CDL and Required Tests

CDL Class Tests Required Possible Endorsements and Required Tests
Class A
(Combination
vehicle endorsement required)

General Knowledge Written Exam

Combination Endorsement Written Exam

Road Exam

H - Hazardous Materials Written Exam
N - Tank Vehicles Written Exam
P - Passenger Transport Written and Road Exam
T - Doubles/Triples Written Exam
X - HazMat and Tank Vehicles Written Exam
L - Air Brakes Written and Road Exam
S - School Bus Written and Road Exam
Class B

General Knowledge Written Exam

Road Exam

H - Hazardous Materials Written Exam
N - Tank Vehicles Written Exam
P - Passenger Transport Written and Road Exam
X - HazMat and Tank Vehicles Written Exam
L - Air Brakes Written and Road Exam
S - School Bus Written and Road Exam
Class C

General Knowledge Written Exam

Road Exam

Note: If upgrading to a Class C from a Class D, no road test is required UNLESS the endorsement requires one.
H - Hazardous Materials Written Exam
N - Tank Vehicles Written Exam
P - Passenger Transport Written and Road Exam
X - HazMat and Tank Vehicles Written Exam
L - Air Brakes Written and Road Exam
S - School Bus Written and Road Exam

Texas CDL Endorsements

Exam Time Allowed (Minutes) # of Questions on Exam # of Correct Answers Needed to Pass
General Knowledge 60 50 40
Air Brakes 25 25 20
HazMat 30 30 24
Tank 20 20 16
Passenger 20 20 16
Doubles/Triples 20 20 16
Combination Vehicles 20 20 16
School Bus 20 20 16
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