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FREE CO CDL INFO | DMV Locations | Fees Forms | FAQs | Colorado CDL Requirements

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

Jump to official Colorado CDL website information.

Colorado CDL Info | CO CDL Requirements

Colorado CDL Learner Permit Training Program
Colorado CDL Practice
Test Prep
CO CDL  School Bus

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.

Go to Colorado CDL Selector Tool
If you need help . . .
determining what Class of CDL you need based upon the type of vehicle you will drive (A, B or C) or are not sure which CDL Endorsements you need based upon the type of loads you will carry; use the free CDL Selector Tool . . .
Colorado
Go to CDL 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.

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

Colorado 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

Quickly access the most complete and accurate Official Colorado CDL Information

Colorado CDL Manual, CDL Colorado Handbook
Colorado CDL Requirements

Access Official Federal CDL General Information

Access Official Federal CDL Medical Requirements Info

Access Official Federal CDL Hazardous Materials Info

Click on the items above to find answers to your Colorado CDL questions

  • What is a Commercial Drivers License (CDL)?
  • How to get a Colorado CDL (Commercial Driver's License)
  • How old do you have to be to get a Colorado CDL (Commercial Driver's License)
  • How to get a Colorado CDL HazMat (Hazardous Materials Endorsement) Permit
  • What is the difference between Interstate and Intrastate?
  • How to get a free Colorado CDL Study Guide
  • How to get a Colorado School Bus CDL
  • How much does a Colorado CDL cost?
  • Where is my nearest Colorado DMV CDL office located?
  • Where can I find Colorado CDL (commercial drivers license) forms?
  • What are the Colorado CDL Medical Requirements?

. . . and answers to many more Colorado CDL questions!

Are YOU ready to get YOUR Colorado CDL?
Prepare for YOUR Colorado CDL Tests NOW . . .

 Colorado CDL License
In addition to the Colorado CDL (commercial driver's license) information found in our website covering the Colorado CDL and in the free Colorado CDL Handbook (which is quite boring and a bit confusing - and doesn't have a single multiple-choice question in it that is asked on the actual tests), the complete online Colorado CDL Practice Test prep program will prepare you to easily pass your Colorado CDL written exams to get your Colorado CDL permit. The skills test modules are invaluable to give you a head start before doing your behind the wheel work, possibly saving you a lot of money. The Colorado CDL test prep program includes the following features . . .
  • Covers ALL Eight Colorado CDL written tests.
    • In separate study modules - you won't need all of them - don't waste time on what you don't require.
  • Covers ALL Three Colorado CDL skills tests.
    • In separate study modules - you won't need all of them - don't waste time on what you don't require.
  • 670 practice Colorado CDL test questions with actual answers.
  • Access to CDL videos covering written and skills tests.
  • CDL study guide in both text and audio - listen as you read along.
  • CDL study Quick Reviews.
  • Interactive online CDL Quizzes.
  • and much more!
May your new CAREER be prosperous!!!

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Michael Hamilton
Director
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