1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
  • 0 Incorrect (10 allowed to pass)
  • 0 Correct
Restart
 
 
 
 
 
Advertisement
Explore free tests
  • Updated for April 2025
  • Based on 2025 CO commercial driver's license manual

CO CDL General Knowledge Exam Simulator 2025

Have you always wanted to drive one of those heavy trucks you saw as a kid? Or perhaps the school bus driver inspired you to follow their career path once you grew up. Make your dream career a reality and begin the process of obtaining a Colorado Commercial Driver’s License (CDL) today. Your determination to achieve your professional goals will play a crucial role in this journey, but you must also meet several licensing requirements. To obtain a Commercial Learner’s Permit (CLP), you must obtain a valid DMV Medical Examiner’s Certificate, provide the necessary documentation, pay the license fees, and pass the official CDL General Knowledge (permit) test. This exam consists of 50 questions based on the official Colorado commercial driver license manual (Colorado CDL Handbook 2025). After holding a CLP for at least 14 days and completing Entry-Level Driver Training (ELDT) from a registered training provider, you can schedule and take the CDL skills test.

If you have difficulty understanding the various aspects of commercial driving theory, you should adopt a smarter approach and change your study routine. You cannot become an expert overnight, so we recommend dedicating a few days to understanding the basic concepts and several more weeks to master this subject. Our other CDL practice tests can strengthen your knowledge through active learning, which is more effective than traditional learning methods. When you’re ready, take our Colorado CDL General Knowledge Exam Simulator to see if you can pass the official exam. This intuitive tool has been recently updated for April 2025 and includes the latest updates brought by DMV rules or state law. All 50 questions have multiple answer choices, but only one is correct.

You get unlimited attempts, nonstop access, and the flexibility to practice at your own pace. All you need is a compatible device and a stable internet connection. Your dream career is within reach. We’ll get you there faster with our intuitive tools, but you must put in the time and effort necessary to become a safe and responsible commercial driver. Whether it takes weeks or months, remember there’s no time limit during your learning phase.

  • Perfect for first-time and renewal CDL/CLP applicants, and those adding endorsements
This test is a Premium member exclusive. You'll get

All 650 exam-like questions specific to Colorado

Interactive learning with AI personal tutor

Unique 360° Virtual Road Simulations

Get your money back if you don’t pass

About this test

5 min to complete
Available in EN and ES
Verified by Steven Litvintchouk, M.S., Chief Educational Researcher, Member of ACES. See our detailed commitment to accuracy and quality in our practice tests.

What to expect on the actual CO DMV exam

50

questions

40

correct answers to pass

80%

passing score

Are you in another state?

Your go-to, trusted source

Experience the Driving-Tests difference
Since our foundation in 2010, Driving-Tests.org has led the way in online driver's education, with over a decade of experience. Our dedicated experts, bringing together more than 50 years of collective expertise, have established us as the largest non-governmental organization in the U.S. solely focused on driver education. We go beyond the official manuals, offering unique interactive experiences and support like audio guides and an AI Assistant, to cater to different learning styles and needs.
Helping hundreds of thousands to ace their tests, our resources have earned a 4.7-star rating from over 14,500 reviews. Our goal is to make your path to becoming a confident driver as straightforward and effective as possible.
 (10  allowed to pass)
Restart test
Ask AI Coach
Ask DMV Genie AI
new
    Calculating your test results Your test results are ready
    Pass Your CDL Exam the First Time - Guaranteed

    Before you see your results, discover how CDL Premium helps you:

    • Real CDL Exam-Like Colorado Questions
      Questions match official CDL tests
    • Official FMCSA-approved
      ELDT Certification included
    • 99.06% Verified Pass Rate vs. 49% Average
      Proven success, specialized for CDL drivers

    Trusted by 1.15 Million drivers

    Secure Your CDL & ELDT Certification Continue to my results
    Opens in a new tab — your results are saved
    Try Driving-Tests Premium

    Pass the knowledge test the first time, guaranteed.