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Colorado CDL Class B Practice Test 2025

Average pass rate for CDL tests in Colorado: 62%.
Average pass rate for this test: 59%.
Moderate
9 min

Welcome to our Colorado CDL Class B Practice Test, an intuitive tool available online, 24/7. It consists of 50 questions on the various aspects of commercial driving theory. Each question has multiple answer choices, but only one is correct. Please finish each session at your own pace and avoid rushing. We have omitted any timer from this practice test to let you focus on understanding the material without pressure.

The official Colorado Commercial Driver License Manual (Colorado CDL Handbook 2025) describes commercial driving theory in detail. You should read its contents multiple times during your learning phase. This resource should not be missing from your toolkit. It is essential for building the foundation of your driving skills. You can use it alongside our practice tests to boost your learning potential and study efficiently.

Colorado CDL Class B Practice Test 2025
Commercial Driver's License
Based on the official CO CDL HandbookHandbook‑based (2025) + exam‑taker feedback
4 CO students practicing now
• 41 completed today
Steven Litvintchouk, M.S., Chief Educational Researcher at Driving-Tests.org

Authored and fact-checked by Steven Litvintchouk, M.S.

Chief Educational Researcher, Driving‑Tests.org (ACES member)

Last verified for accuracy on

Methodology & Editorial Policy

Real Colorado drivers who passed first try

Verified student reviews • Shared with permission

Thanks to Driving-Tests.
Org I passed all tests 95 and above. I love driving a school bus! I'm Very happy!
J
Walked in and did General knowledge, air brake, doubles,.
I walked in and did General knowledge, air brake, doubles, triples, tanker, hazmat, school bus and passenger. I did it all on the same day, and I passed with a 97 or 98% something like that. So I was very well prepared and passed the test with ease.
K
Fast and efficient way to prepare for the exam.
Read the CDL manual, then started to re-read more intensely. But, then I came across driving-tests.org. In one afternoon I learned much more than I would have by just re-reading the manual. This was much more efficient and made me comfortable that I can pass any test.
JIC
Best place to get ready for anything cdl.
This hazmat elite training was great for Ms here in colorado I used to for the hazmat elite and for class a and I passed both with ease. My hazmat test at the dmv basically was all the questions from practice test 4 so thank you guys for the great course
J
Using Driving-tests.org made it super simple to study.
I spent maybe 10 hours answering questions. The marathons questions really solidified my knowledge. I definitely did not need to read the handbook. I think I missed 5 on the general knowledge. I missed three on the air brakes and 1 on the combination vehicles. I was able to complete all 3 tests in less than 40 minutes. The agent administering the test was surprised at how quickly I completed the test. She said they have people from trucking schools that spend hours taking the test and most do not pass the first time.
C

About the Colorado CDL

“Officer Frank,” our automated assistant, can provide personalized answers to your individual questions. Initiate a conversation with our AI coach during your practice sessions to receive helpful insight. Stuck on a difficult question? “Officer Frank” can provide hints that nudge you in the right direction without revealing the correct answer. It can also rephrase complex questions to make them easier to understand.

If you make a mistake, we will immediately point it out to you, so you won’t have to wait until the test ends to know what went wrong. To help you learn from your mistakes, we provide a detailed explanation that describes the reasoning behind the correct answer. For future reference, you should note this feedback in a notebook or notebook app. You get unlimited attempts and nonstop access to this practice test. Train as often as your schedule allows, no matter where you are in the world. All you need is a compatible device, a few hours of free time, and a stable internet connection.

Becoming a successful commercial driver in Colorado takes time and effort. Our Colorado CDL Class B Practice Test can get you there faster, but you must train with it consistently.

We know what it takes to pass. And we’ve got the proof.

Driver’s Ed is - nobody wants to set foot inside the DMV. That’s why millions of learners trust us for simple, visual, effective prep.

An official & trusted partner in driver education

We are an officially recognized FMCSA Entry-Level Driver Training provider and a proud partner to over 2,500 libraries. We work with safety organizations like GHSA and the National Safety Council to help create safer roads for everyone.

A smarter way to study

Challenge Bank™

Our trademarked system automatically saves questions you miss, creating personalized tests that target your weak spots until you’ve mastered the material.

AI-powered feedback

Get smarter as you study. Our new AI-powered feedback provides detailed, question-level insights to help you understand the why behind each answer.

Interactive handbook

Go beyond the boring black-and-white manual. Our interactive handbook lets you read, listen with an MP3 audio version, or even chat with it to find the information you need, faster.