CO commercial driver's license
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Colorado CDL Practice Tests - All Endorsements

Practice the exact question formats your DMV uses. When you sit down for the real test, you'll know the answer before you finish reading the question. Pass, get your CDL, and start earning $60K+ within weeks - not months.

FMCSA-Registered ELDT Provider 

Driving cattle across Colorado is different these days, and if you want to haul beef across The Centennial State, it's crucial to have a Colorado commercial driver's license. We have examples for every test and every endorsement, including passenger and school busses, doubles/triples, tank vehicles, hazardous materials, or air brake restriction removal. So, roll up your sleeves and get ready to get Rocky Mountain high.

What's your CDL goal?

You need to pass these knowledge exams at the DMV. Practice each one below.
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    1,600+ questions covering all CDL classes and endorsements. Includes FMCSA-approved ELDT training.

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    Pre-Trip Inspection

    91 questions
    CO Pre-Trip Inspection Test 1
    CO Pre-Trip Inspection Test 2
    CO Pre-Trip Inspection Test 3
    CO Pre-Trip Inspection Test 4
    CO Pre-Trip Inspection Marathon
    CO Pre-Trip Inspection Exam Simulator
    Pre-Trip Inspection Cheat Sheet
    Pre-Trip Inspection Video by Apex CDL Institute
    01m 05s
    How to perform a CDL Class A Pre-Trip Inspection
    22m 40s
    Pre-Trip Inspection Video
    by CDL College
    31m 58s
    Full Exterior and in Cab PTI by West Georgia Tech College
    16m 13s
    Air Brake Tests for Combination Vehicles
    05m 22s

    The Challenge Bank™

    Your missed questions

    Your personalized Challenge Bank™ automatically retests you on all your missed questions until you nail every single one. No shame - we all have weaknesses!

    The Challenge Bank™
     

    Your personalized Challenge Bank™ automatically retests you on all your missed questions until you nail every single one. No shame - we all have weaknesses!

    Start Challenge Bank™

    The CO CDL Handbook

    Handbook

    Read or listen to this interactive handbook designed for minimum boredom and maximum engagement. Download to study anywhere, anytime.

    CO CDL Handbook

    Not your typical read — this interactive handbook is designed for engagement. Study anytime, anywhere: read, listen, chat with it or download for offline access.

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    PDF
    Listen
    MP3 (8h 22m)
    Download
    9 MB
    Open Handbook

    FREE E-Book

    Many people arrive at the DMV overconfident and underprepared because they fail to do some of the simple things that would allow them to pass easily. What follows are the 10 steps that every aspiring commefcial driver should take to prepare for his or her official CDL or CLP knowledge exam.

    10 Things You Should Do Before Your CDL Knowledge Exam

    Many people arrive at the DMV overconfident and underprepared because they fail to do some of the simple things that would allow them to pass easily. What follows are the 10 steps that every aspiring commefcial driver should take to prepare for his or her official CDL or CLP knowledge exam.

    Open E-Book
    Not available in Flashcard Mode
    Steven Litvintchouk, M.S., Chief Educational Researcher at Driving-Tests.org

    Reviewed for legal and handbook accuracy

    Steven Litvintchouk

    M.S., Chief Educational Researcher (ACES member)

    Last verified for accuracy on

    Andrei Zakhareuski, Co-founder & CEO, Driving-Tests.org

    Test design and learning experience oversight

    Andrei Zakhareuski

    Co-founder & CEO, Driving-Tests.org

    Questions are created and maintained by the Driving-Tests.org content team following our multi-layer editorial process and updated whenever the Colorado DMV changes its handbook or website information. Official sources we check: