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

Air tanks need to be drained:

2 / 40

The brake pushrod should not move more than____for manual slack adjusters.

3 / 40

You don't want to use wheel chocks when hooking a combination to a second trailer with no spring brakes. What should you do?

4 / 40

Select which is not a mandatory emergency equipment:

5 / 40

Under which two special conditions should you downshift?

6 / 40

The _____of the kingpin has the locking jaw close around it.

7 / 40

The compressor is connected to the engine via _____?

8 / 40

Which trailer is more likely to roll over when pulling 3 trailers?

9 / 40

What product is typically carried in a liquid tank trailer without baffles?

10 / 40

What is the best way to stop all skids?

11 / 40

The air leakage rate for a combination vehicle should not exceed ____psi a minute.

12 / 40

Select the true statement about dual air brake systems.

13 / 40

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

14 / 40

You should line up_____when getting ready to back under the trailer.

15 / 40

What do you do first during step 3 of starting the engine and inspecting the inside of the cab?

16 / 40

The safety catch for the fifth wheel locking lever must be ____ for a coupling to be complete.

17 / 40

A bus has a GVWR of 22,000 pounds and seats 24 passengers. What CDL class is this vehicle?

18 / 40

If you have riders on board, you must never refuel:

19 / 40

If your engine runs a pump used during delivery of compressed gas, should you turn off the engine before or after unhooking hoses after delivery?

20 / 40

Before pulling away, make sure the landing gear of the trailer is:

21 / 40

The trailer should be lowered so that _____.

22 / 40

An emergency escape ramp should be used _____.

23 / 40

Select the accurate statement in regards to rolling up the landing gear to complete the coupling process.

24 / 40

When arriving at the destination announce:

25 / 40

Select the true statement about tractor protection valve:

26 / 40

This object should not move more than an inch by pulled by hand with the brakes released for manual slack adjusters.

27 / 40

A hazard class that uses transport indexes to determine the amount that can be loaded in a single vehicle is _____.

28 / 40

What is most likely to occur when driving a tanker truck and the front wheels begin to skid?

29 / 40

Select the true statement about retest markings:

30 / 40

What do you check when doing a visual inspection of the coupling?

31 / 40

When should the trailer hand valve be used?

32 / 40

Select the true statement in regards to brake drums or discs:

33 / 40

Select the correct setup for shut-off valves:

34 / 40

Select the true statement in regards to if a glad hand on the blue air line is missing a seal.

35 / 40

With Division 1.2 or 1.3 Explosive B, how close to the travelled part of the roadway can you park?

36 / 40

Which of the following is NOT a part of the steering system?

37 / 40

Select the true statement about speed and stopping distance.

38 / 40

Select when you should use the parking brake:

39 / 40

Select the factor that is known to cause brakes to fail or fade. (more than one answer may be correct, but select only one)

40 / 40

You should check that the following makes an audible noise:

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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.