AZ CDL Practice Test 2026: What to Study and the 80% Rule

Is there an official AZ CDL practice test?

MVD’s page on getting a CDL doesn’t mention one. It says to study the Commercial Driver License Manual before your knowledge tests; the practice tests on MVD’s site are for the regular driver license and instruction permit. For the skills test, the manual’s sections 11, 12 and 13 (or 11M, 12M and 13 in the modernized version) set out what’s checked.

The CDL knowledge tests

Here’s how they work:

You take them at an MVD office, from 7:30 a.m. to 3 p.m.
You complete the CDL application there and pay for the class before testing
All your knowledge tests are in the same visit
You need at least 80% on each, and if you fail, you wait one business day to retake it
No phones or other electronic devices in the testing area, and no one else with you

Steps to an Arizona CDL

In order:

Be at least 18 and an Arizona resident. Under 21, your CDL is valid only in Arizona and you can’t haul hazardous materials.
Get a medical exam from an examiner on the National Registry of Certified Medical Examiners. Your medical certificate (MEC) is sent to MVD electronically, so allow 24 hours before your visit.
Get a Commercial Learner’s Permit (CLP) by passing the knowledge tests.
Finish Entry-Level Driver Training (ELDT) if it applies to you: a first Class A or B, an upgrade from B to A, or a first S, P or H endorsement.
Hold the CLP at least 14 days, then take the skills test in a vehicle you provide.

MVD’s CDL page says a CLP is valid for up to 12 months, while its license classes page says six months, so check your permit’s expiry date. The MEC must be renewed every 24 months or sooner, or you can lose your CDL privileges.

CDL classes

The three classes:

Class	Vehicles
A	Combinations of 26,001 lbs. or more, towing more than 10,000 lbs.
B	A single vehicle of 26,001 lbs. or more, towing 10,000 lbs. or less
C	Smaller vehicles that carry 16 or more people, driver included, or need hazardous materials placards

A Class C CDL needs a passenger (P) or hazardous materials endorsement (HME).

CDL fees

Fees for first-time applicants:

Item	Fee
Class A or B license or permit	$25
Class C license or permit	$12.50
Class A or B skills test	$25
Class C skills test	$12.50
Doubles, tank, HME or passenger	$10
Motorcycle endorsement	$7
School bus endorsement	No fee