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

Take extra caution when driving smooth bore tanks during:

2 / 40

Select the statement that describes how you could damage the landing gear.

3 / 40

What is always required before loading, driving, or unloading a tanker?

4 / 40

Select the true statement about converter dollies:

5 / 40

When does stab braking occur?

6 / 40

Rods, connecting links, and arms from the steering box to the wheel are a part of the:

7 / 40

When does your vehicle's single brake system need an adjustment?

8 / 40

Why does it take special skills to haul a tank vehicle?

9 / 40

Which of the following must be closed while the bus is in motion?

10 / 40

Which of the following is the proper definition of a cargo tank?

11 / 40

The bus driver must accept responsibility for supervising and controlling students while on the bus route. Who is the person in charge?

12 / 40

How do you make sure the air lines are not crossed and the trailer brakes are working after supplying air to the trailer?

13 / 40

The golden rule for school buses when approaching and crossing railroad tracks is:

14 / 40

Start by___when coupling.

15 / 40

To maintain alertness during the trip, drivers should:

16 / 40

Five hazard classes that require placarding in any amount are ______.

17 / 40

Which of the following statements about downshifting is NOT true?

18 / 40

To prevent a roll over a driver can 1) keep the cargo as low to the ground as possible and 2) _____.

19 / 40

You must carry a gas mask with you when transporting:

20 / 40

The 3 parts of the air brake system are: service brakes, parking brakes, and ____.

21 / 40

The system that needs to be checked for signs of leaks with rust or carbon soot and damage is the _____.

22 / 40

If you double your speed, what will happen to your stopping distance?

23 / 40

Select the true statement in regards to what the fifth wheel should be checked for.

24 / 40

Cargo tanks ____.

25 / 40

To test the tractor-trailer connection for security, you should:

26 / 40

Do not tow or push a disabled bus with riders aboard the vehicle, unless:

27 / 40

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

28 / 40

In the event of an accident you should remember to do the following EXCEPT:

29 / 40

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

30 / 40

Select the false statement about suspension:

31 / 40

What is the value of the overhead rear-view mirror inside of the bus?

32 / 40

When should you avoid using the parking brake?

33 / 40

Select the statement that best explains the "crack-the-whip" effect.

34 / 40

Select the true statement about what the Air Compressor Governor controls:

35 / 40

How should you know when to shift?

36 / 40

Which of the following statements about special danger of loading and unloading is true?

37 / 40

What will happen right away should the service air line come apart but the emergency line is intact while driving a combination vehicle?

38 / 40

Do empty trucks have the best braking?

39 / 40

The two main things to look ahead for while driving are _____.

40 / 40

The most important hand signal you should agree on with a helper is:

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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.