Arizona CDL Study Guide
Arizona issues commercial driver licenses through the Motor Vehicle Division (MVD) of the Arizona Department of Transportation. The state follows federal CDL rules in its Commercial Driver License Manual (Form 40-7802). You can drive a commercial vehicle inside Arizona at 18. You must be 21 to drive across state lines or carry hazardous materials.
Key Arizona numbers
- Minimum age (intrastate): 18
- Minimum age (interstate or hazmat): 21
- CLP hold before skills test: at least 14 days
- General Knowledge passing score: 80%
- General Knowledge test: ~50 questions
- Air Brakes test: ~25 questions (required if your vehicle has air brakes)
- Combination Vehicles test: ~20 questions (required for Class A)
Topics on the Arizona General Knowledge test
- Vehicle inspection (pre-trip, en-route, post-trip)
- Driving safely (speed management, space management, hazard perception)
- Transporting cargo safely
- Air brakes (if your vehicle is air-braked)
- Combination vehicles (Class A)
If you fail a test
If you fail a CDL knowledge or skills test in Arizona, you may schedule a retake at the MVD. Additional fees may apply. See the AZDOT CDL Fees page for current retake details.
Frequently asked questions
How old do I need to be to get a CDL in Arizona?
You must be at least 18 to drive a commercial vehicle inside Arizona. You must be 21 to drive across state lines or carry hazardous materials.
How long must I hold my Arizona CLP before the skills test?
You must hold your Commercial Learneru0027s Permit for at least 14 days before you can take the CDL skills test. The CLP is valid for 12 months.
How much does an Arizona CDL cost?
The CLP is about $25, the CDL is $25 (Class A or B), the skills test is $25, and each endorsement adds $10.
Do I need to take Entry-Level Driver Training in Arizona?
Yes. If you are getting your first Class A or B CDL, or your first H, P, or S endorsement, you must complete federal ELDT from an FMCSA-registered provider.
Do I need a DOT medical card to get an Arizona CDL?
Yes. You must complete a DOT medical exam and submit your Medical Examineru0027s Certificate to the MVD.
What is the official Arizona CDL manual?
Arizona CDL Manual Form 40-7802 is the official study guide. You can download it free from azdot.gov.
Free practice
Start an Arizona General Knowledge quiz →
Sources: AZDOT Commercial Driver License Manual page Arizona Commercial Driver License Manual PDF (40-7802) AZDOT Commercial Driver License (CDL) page AZDOT CDL Fees page