CDL Practice Test


This site contains free CDL practice tests for Arizona. You can take these practice tests as many times as you would like as you prepare for the Arizona CDL test. Questions are derived from various CDL topics that are represented in the Arizona CDL manual. You will be presented with 40 questions and you must answer 34 test questions correctly to pass. There is a 50-minute time limit. You may not go back once you answer a question. Click the “Start Test” button below to begin your Arizona CDL practice test.

1 / 40

What gauge on the dashboard indicates electrical system charging rate?

2 / 40

To transport cargo safely, which of these are you NOT responsible for?

3 / 40

Which of the following is NOT an acceptable type of marking for hazardous materials?

4 / 40

What is the purpose of the supply pressure gauge?

5 / 40

The transport index of a radioactive material:

6 / 40

What are some of the important parts in the steering system?

7 / 40

Which of the following statements about "Radioactive" labels is true?

8 / 40

When arriving at the destination announce:

9 / 40

Make sure that_____before you back under a trailer.

10 / 40

If you are carrying Division 1.2 or 1.3 materials, how far away must you park from the traveled portion of the roadway?

11 / 40

What is NOT one of the four skill areas that operating a commercial vehicle requires?

12 / 40

Which of the following is a reason to evacuate the school bus?

13 / 40

You can be sure air is supplied to the second trailer by:

14 / 40

How should the trailer be lined up when preparing to back the tractor up?

15 / 40

The blind spot behind the bus could extend to how many feet?

16 / 40

Commerical vehicles typically have this type of brake.

17 / 40

It takes special care to drive tankers with liquid in them because:

18 / 40

You should check____when loading the small tanks of a cargo tank with bulkheads.

19 / 40

The emergency air line is _____and the service air line is____.

20 / 40

It is good practice to_____when uncoupling.

21 / 40

What might happen if you swing wide to the left before you turn right?

22 / 40

What should you hear when you have the hand valve on and are testing the trailer brakes by opening the service air line at the back of the trailer?

23 / 40

Select the true statement in regards to large combination vehicles taking longer to stop.

24 / 40

How do you release the dolly brakes when coupling twin trailers?

25 / 40

After deciding the type of evacuation that is necessary, the next step you must take is:

26 / 40

Select the action that is not recommended when driving on slippery roads:

27 / 40

Why should you test the tractor protection valve?

28 / 40

You should never brake and should rely only steering inputs to avoid a crash while driving a tanker truck.

29 / 40

Which contains more alcohol: a 12-ounce glass of 5% beer, a 5-ounce glass of 12% wine or a 1 1/2-ounce shot of 80 proof liquor?

30 / 40

What is most likely to occur when the front wheels begin to skid?

31 / 40

What should you do if you start a trailer skid?

32 / 40

For Division 1.1 or 1.2 Explosives A, should the floor liner required be stainless steel?

33 / 40

Buses are prohibited from carrying all of the following hazardous materials except:

34 / 40

What is the best way to stop all skids?

35 / 40

Cargo tanks ____.

36 / 40

While completing the 3rd component of the air brake check of a combination vehicle, at what psi should the tracor protection valve and parking brake valve should pop out?

37 / 40

The minimum tread depth for tires other than the front tires is ____.

38 / 40

Select the statement that is true in regards to quick steering movements and triple/double trailers:

39 / 40

A trailer is at the right height to have the tractor backed up to it when:

40 / 40

At around____the governor allows the air compressor to start pumping again:

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CDL Category Practice Tests

CDL Practice Test

How To Get An arizona Commercial Drivers License

All Arizona CDL applicants must possess a valid driver’s license and meet the many eligibility requirements listed here. Arizona residents who are 21 years or older may apply for a commercial driver’s license and any specific endorsements offered. Those residents who are between the ages of 18 and 21 can apply for a restricted commercial driver’s license that only offers intrastate driving and limited endorsement availability. All applicants must possess a medical card from a qualified DOT Medical Examiner.

Any applicants that have the following attributes will be disqualified from receiving a CDL:

  • Being convicted in the past two years of driving a commercial vehicle under the influence.
  • Having more than one driver’s license.
  • Having commercial driving privileges revoked in Arizona or any other U.S. State.
  • Having a suspended or revoked driver’s license.

Those applying for their Arizona-issued commercial driver’s license will be required to take two assessments. These include the knowledge test and the skills test. Depending on the Class and Endorsements that an applicant is seeking, they may be required to partake in more than one knowledge test.


S – School Bus
P – Passengers
T – Doubles and Triples
N – Tanks
H – Hazardous Materials
X – Tanks with Hazmat

Hit the Open Road

arizona CDL License Test Tips

All knowledge tests require a passing score of 80 percent or higher for the applicant to receive their Arizona Commercial Driving Permit. The general knowledge test is comprised of 50 questions regarding commercial vehicles and driving them. Class A drivers will be required to not only complete the general knowledge test, but also a 20 question assessment about combination vehicles. Those seeking endorsements will be required to take a test for each endorsement sought. Hazmat Endorsement requires a 30 question assessment. School Bus Endorsement and the Air Brake Restriction Removal requires a 25 question assessment.

In order to assess an applicant’s ability to operate a commercial vehicle, Arizona testing facilities will require skills tests. These skills tests are comprised of a pre-trip vehicle inspection, on-road driving test, and evaluation of basic control skills. Any applicant that is seeking an endorsement must take the skills test in the type of vehicle the endorsement is intended for.

Additional Information

Information on the Arizona Department of Motor Vehicles

The Arizona DMV regulates the certifying and testing of commercial drivers in the state. To get more information contact them via:


Phone:  602.255.0072


Additional Arizona CDL Helpful Links

Please use the links below to access more valuable Arizona CDL testing resources and to learn more about practice driving test resources for the state of Arizona.