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  • 0  (6 mistakes allowed to pass)

Free AL 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 Alabama, try our AL 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 AL CDL Diagnostic Test 2025
AL commercial driver's license
Based on official AL 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 AL permit test

50

questions

40

correct answers to pass

80%

passing score

Real Alabama drivers who passed first try

Verified student reviews • Shared with permission

I was scared at first.
I was scared at first because all these other websites were so out of date and incorrect questions for the Alabama permit test, but studying all night really paid off the next day!
A
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S
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JHB
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My ELDT ertificate was registered with the TSA within minutes of me completing the course. Everything is multiple choice and they explained the answer for each question below after you answer. Took the course Friday night on my phone and got my endorsement added on Monday. Best part is you can choose to read the material or have it read to you.
JP
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I started this with zero knowledge of the CDL book. Two weeks later, after putting the study time in to get my passing probability to 100%, I passed general knowledge, air brakes, combination vehicles, and hazmat on my first attempt.
TD
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Well, I feel I have made the best decision when I choose this to get my CDL. They keep you hooked all the time while you learn and you learn so well that I remember the day I took my test everybody was nervous and I felt way beyond confident and I know because I was really ready. Thanks to you guys to me, every question I answer was kind of a bonus because you guys prepare me so well that everything was smooth and I felt proud of myself. Now I have my CDL. Thank you again.
DEPM
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I gave myself a short window, 2 days, to study for and pass all 5 of the exams to required to obtain my cdl. I used the practice tests in conjunction with the dmv manual to focus my studying. I passed all of the tests easily. The dmv worker even commented on how quickly I completed all of the exams. Using driving-tests.org enabled me to study smarter not harder.
KL

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