What's on the Arizona CDL General Knowledge Test? (2026)
The Arizona CDL general knowledge test gives you 50 multiple-choice questions, and you've got to get 40 of them right, which works out to 80%. That's the federal standard. Pass the AZ CDL permit test plus any endorsement tests for your Commercial Learner's Permit.
The Arizona CDL written test follows the federal 50-question format. The test isn't trick-based, but it does pull straight from the Arizona CDL manual. I've watched guys walk in without ever opening the manual, and they usually come back out pretty quiet.
Below I'll go through what's on the Arizona commercial drivers license test, how it's laid out, and how I'd study for it if I were starting over. Anything official, like fees or scheduling rules, double-check at azdot.gov/mvd since that's where the MVD posts changes.
How Many Questions Are on the Arizona CDL Knowledge Test?
Fifty questions. Multiple choice. Passing score is 80 percent, so you can miss up to 10 and still walk out with a permit.
That's the federal standard, and Arizona uses it for the core general knowledge test. Every CDL applicant takes this test regardless of whether they're going for Class A, Class B, or Class C. It's separate from endorsement tests, which add their own question counts and passing bars.
You can sit the AZ CDL test at an MVD office or at one of the approved third-party locations. I'd block off 60 to 90 minutes for the visit, though some folks are out the door a lot faster than that.
The test is the written gateway to your Commercial Learner's Permit. No permit, no skills test. Simple as that.
Topics Covered on the General Knowledge Test
The Arizona CDL manual is your source. Everything on the test comes from there. The main sections:
- Vehicle inspection
- Basic control and safe driving
- Shifting gears
- Seeing hazards
- Communicating and space management
- Controlling speed
- Night driving and extreme conditions
- Handling emergencies
The emergencies section is where a lot of my students lose points. It covers what you do about a fire, a brake failure, a tire blowout and getting out of a skid, and the answers are specific about the order you do things in.
CDL general knowledge test questions use wording from the manual.
Space management is another heavy section. Space management covers:
- Following distance
- Stopping distance
- Turning radius
- The space around your truck
You'll need to unlearn car habits. A loaded commercial vehicle doesn't stop like a sedan.
CDL test Arizona questions come from the current manual. Don't use an old PDF from a random forum. MVD updates the manual, and questions change.
General Knowledge vs. Endorsement and Combination Tests
The general knowledge test is the base layer. Depending on what you want to drive, you might also need:
- Air brakes
- Combination vehicles (required for Class A)
- Passenger
- School bus
- Tanker
- Doubles and triples, plus hazardous materials
Every one of those endorsements is a separate test with its own set of questions and its own passing score, so you're studying for more than one exam. Air brakes and combination vehicles are common because most Class A jobs in Arizona require them. HazMat requires a TSA background check on top of the written test.
Some endorsements also require Entry-Level Driver Training before you can even take the test. Passenger and school bus fall into that category. HazMat does too.
Match your tests to your CDL goal. A local delivery job in Tempe may only need general knowledge plus air brakes. If you're hoping to pull doubles on the I-10 run between Phoenix and Tucson, you're adding the combination test and the doubles/triples test on top of that. The manual and azdot.gov/mvd spell out exactly what each job needs, so look there before you book anything.
How the Knowledge Test Fits the Arizona CLP and CDL Path
The sequence in Arizona works like this:
- Pass the general knowledge test and any endorsement tests.
- Get your Commercial Learner's Permit.
- Complete Entry-Level Driver Training.
- Hold the CLP for at least 14 days.
- Pass the skills test.
The knowledge test is step one. The skills test is the behind-the-wheel part. You can schedule the knowledge test through AZ MVD Now or a third-party examiner. Some locations in the Phoenix metro book out a week or two ahead, so plan for that.
The 14-day CLP hold is federal. No shortcuts. Even if you feel ready on day three, you're sitting on that permit for the full 14 days before anybody puts you through a skills test.
How to Study and Pass the CDL Knowledge Test First Try
First grab the current Arizona CDL manual off azdot.gov/mvd and get through the whole thing once, actually reading it instead of flipping pages. After that the practice tests start.
Here's the routine I give my students. Do one section of the manual a day for about 20 to 30 minutes, then right away take a practice test on just that section. Anything you miss, go back and reread that part of the manual, and keep looping like that until you're landing over 85 percent pretty much every time. Every few days, throw in a full 50-question practice test so you get used to the length.
I'd pick half an hour every evening over one giant Sunday cram session, because the stuff actually sticks when you see it over and over across a couple of weeks. Focus on weak areas. That usually means air brakes and space management. When a question asks about stopping distance, yielding or a railroad crossing, it's usually looking for the manual's exact wording, so the almost-right answer gets you nothing. Read carefully.
Drivio has free Arizona CDL practice tests at /cdl/arizona. They're set up like the real 50-question test. Once you're clearing 80 percent on most runs, I'd still do another few days of them, because test-day nerves knock a few points off almost everybody.
Arizona CDL Knowledge Test FAQ
How many questions are on the Arizona CDL general knowledge test? It's 50 questions, all multiple choice, the same count every CDL applicant gets.
What score do I need to pass? 80 percent, so you've got to get at least 40 of the 50 right.
How many can I miss? You can miss up to 10 questions. You still need 40 correct.
Are endorsements separate tests? Yes. Each endorsement has its own test with extra questions:
- Air brakes
- Combination vehicles
- Passenger
- School bus
- Tanker
- Doubles/triples
- HazMat
Is the test multiple choice? Yes, every one of the 50 has you pick from a set of answers. There's nothing you have to write out.
Where do I take the test? Either at an MVD office or with an approved third-party provider, and you set it up through AZ MVD Now. Phoenix metro spots can fill a week or two out, so don't leave it to the last minute.
Common Questions About Studying for the CDL Test
How long does it take to study? Most of the folks I work with need somewhere around two to four weeks if they're studying every day. If you have trucking experience, maybe less. New commercial drivers should allow more time.
How soon can you retake after failing? Arizona allows retakes, but you'll pay the test fee again. How long you wait before trying again can depend on where you test, so ask the office before you leave that day.
Do practice questions match the real test? Good ones do. They match the concepts and structure. Manual-based practice tests help you learn question phrasing.
Which endorsement tests should a new trucker take? Air brakes and combination vehicles if you're going for Class A. Tanker and HazMat open more job options. Don't take endorsements you don't need. Each one adds study time and fees.
How hard is it? Not brutal if you study. The people I see fail are mostly the ones who walked in without reading anything, figuring years of driving a pickup would carry them. Put in the manual time and the practice tests and you'll be fine.
The Arizona CDL general knowledge test is straightforward. Fifty questions, 80 percent, straight from the manual. Put in the study time, use Drivio's free practice tests at /cdl/arizona, and you'll be one step closer to your permit.
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