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  • 0  (6 mistakes allowed to pass)

Free MA 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 Massachusetts, try our MA 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 MA CDL Diagnostic Test 2025
MA commercial driver's license
Based on official MA 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)
Last verified for accuracy on
Methodology & Editorial Policy

5 min to complete
Available in EN and ES

What to expect on the actual MA permit test

50

questions

40

correct answers to pass

80%

passing score

Real Massachusetts drivers who passed first try

Verified student reviews • Shared with permission

Best website for CDL and hazmat training.
You will pass! The practice hazmat tests are spot on! If you drive tractor trailer for a living, you need this valuable tool!
-S
(Massachusetts) This is a must for any CDL driver.
Reading through the CDL manual is not enough. The questions and study material here are exactly what you need to know to pass the exams. Passed on the first try with combo and airbakes. My only regret is not taking all of the endorsements together!
P
Am from French country in Africa.
Am from French country in Africa. This application very help me to passed my exam with 100% one time I really recommend.
T
I am not one of those people that can….
I am not one of those people that can open a book, read it and learn the material. I need hands on and repetition. This program is really fantastic in its design and I find myself not only learning, but having fun. My goal was to just learn the material and pass the tests, but I never thought I would enjoy the learning process. I find myself taking the quizzes over and over just to beat my last score, or get a perfect 100% I can now go take my CDL tests with confidence! I'm almost 60, I have not taken a "test" in a long time, my stress level went from 100% to almost nothing because I know I have really learned the material! I am even taking the tests for certifications I am not planning on getting because learning this way is so much fun!
J
CDL Prep.
Great resource! Studied the program and followed lessons as indicated for a total of 30 hours over 4 days. Passed CDL exam (general knowledge, air brakes, double & triples) in 35 minutes. Well worth it. I will be using it for all future test prep!
BDD
Amazing experience with this coarse.
I passed my knowledge exam! I knew nothing about tractor trailers and used this coarse for 5 days studying hard and long and now I feel like I know everything about trucking! thank you for making this curriculum! its worth 99 bucks if your a no nonsense do it right person. Id hard core recommend anyone who's looking to get into trucking to take this course!
DM
After doing the practice tests I easily scored a 100 at the DMV!
After the practice tests and marathon for a CDL endorsement, I went to the DMV and passed with 100% in less than five minutes!
BD

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