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
All tests
– / –
 
 
 
 
 
Advertisement
  • 0  (6 mistakes allowed to pass)

Free UT CDL Diagnostic Test 2025

Perfect for first-time and renewal CDL/CLP applicants, and those adding endorsements.

To get a rough idea of how much you know about commercial driving rules in Utah, try our UT CDL diagnostic test. It contains 30 multiple-choice questions on a variety of topics in commercial driving: air brakes, hazardous materials, buses, combination vehicles, and tanker trucks. This test will help you quickly identify gaps in your knowledge of commercial driving, which will be especially useful if you’re just starting to prepare for the CDL knowledge exams. Each practice question includes a picture and has four possible answers. Choose the most complete and correct answer for each question. Each question also comes with an optional hint if you need it and an explanation of the correct answer. Try our CDL diagnostic test and see whether you are ready for the real thing. Good luck, and drive safely!

Real exam-style pitfalls you’ll practice:
Common Traps
Distractors
Trick Wording
Double Negatives
Free UT CDL Diagnostic Test 2025
Commercial Driver's License
Based on official UT exam questions
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)
Verified for accuracy December 2025
Methodology & Editorial Policy

5 min to complete
Available in EN and ES

What to expect on the actual UT permit test

50

questions

40

correct answers to pass

80%

passing score

Real Utah drivers who passed first try

Verified student reviews • Shared with permission

Had very little time to study, 7 days, but I passed.
I had very little time to study, 7 days, but I passed! User friendly, clear and concise. Useful and helpful information and I passed!
A
State specific.
Failed my CDL class B exam after using a free study guide online. The Utah DMV Officer agreed with me that those free study guides are not State specific. (You would think that the Federal DOT and the state DOT departments would be on the same page making all tests in all states identical { they aren't}). Driving-tests.org was state specific. 98% pass. Thank you!
MT
I was getting ready to take the CDL….
I was getting ready to take the CDL written test after reading through the Commercial License Hand Book for my state. I also looked around the internet to see if I could find some of the questions that may be on the written CDL test for my state. My search came back with a free CDL test from driving-tests.org for my state. So I started the free test and failed basically right off the bat. The questions I did get correct were in the Commercial Driver License Hand Book but there were way more questions on the drivers-tests.org test then were in the drivers CDL hand book that I would need to pass the written CDL test. So I signed up for the program for my state and took advantage of all the questions tests they have. The CDL general test(s) and Break restriction test(s), combination vehicle test(s), double/triple trailer test(s) and finally the tanker endorsement test(s). I was able to pass all the tests with the help of some of the products I found driving-tests.org. I definitely recommend the test products on driving-tests.org. I would not have my CDL permit right without their assistance.
ME
After reviewing all of my options….
So far this has been a lot of fun as well as easier, thank you for the program. I have studied and studied and have taken many notes and will do more notes,it is hard due to I dont drve a rig so to teach an old guy new tricks with out actually doing ( driving a rig) is hard for my brain to asorb but it is working.
PDP
Dear future CDL drivers,.
I hope you are doing ok and still want to pass the general knowledge, air brakes,combination vehicles and more endorsements. driving-tests.org is the best way to avoid failures in these requirements in any State.Believe me, I was struggling but now I have my permit and I can move forward. Check it out right now and you will thank me later.
SD
This training is exactly what I needed.
Since Feburary 7, 2022, the new Fmsca rule requires a training course in order to upgrade a CDL to hazmat. I was given this company website by a friend and I took the course, passed all of the online training test and then passed the hazmat test at the DOT office with no problem. I now have my hazmat endorsement. thank you for making this process simpler than I thought that it would be.
KGT

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.