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

Select the true statement in regards to as why you should make sure the fifth wheel plate is greased as recommended:

2 / 40

Select the true statement about convex ("spot") mirrors.

3 / 40

These tires should have a minimum tread depth of 4/32 inches.

4 / 40

Which of the following about the front tires on a commercial bus is true?

5 / 40

A slack adjuster is:

6 / 40

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

7 / 40

Select the true statement in regards to managing the space to the sides:

8 / 40

An example of a low pressure warning signal for air brakes is:

9 / 40

Which signals may be used to warn of a stopped vehicle that contains explosives?

10 / 40

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

11 / 40

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

12 / 40

You are driving a 40 foot truck at 35 MPH, how much space (in seconds) should you keep in front of you?

13 / 40

What color and shape is the trailer air supply control?

14 / 40

Remember to____when connecting the converter dolly to the rear trailer.

15 / 40

Select the first action to do when the low air pressure warning comes on:

16 / 40

You should adjust all the outside left and right side flat mirrors to see:

17 / 40

What is the main difference between a portable tank and a cargo tank?

18 / 40

What should you check for when inspecting a converter dolly?

19 / 40

You must control how far packages labeled "Radioactive II" or "Radioactive III" are located from people and cargo space walls by referring to:

20 / 40

Carry-on baggage cannot be stored:

21 / 40

The baffles in a tank trailer help to control:

22 / 40

You should follow behind other vehicles ______when traveling under 40 mph.

23 / 40

This object is not checked at the rear of the trailer.

24 / 40

Your vehicle is going down a long hill and your brakes begin to fail. What should you do?

25 / 40

Secure baggage and freight in ways that avoid damage and:

26 / 40

Wet brakes can cause _____.

27 / 40

The Emergency Response Guide, ERG, can best be explained as _____.

28 / 40

How often should you check your cargo?

29 / 40

It is important to know the outage required for the liquids you carry because:

30 / 40

A drawbridge does not have a traffic light showing green or a traffic control attendant. How many feet before the draw of a bridge must a bus driver stop?

31 / 40

A battery box check is important. The battery must be secure, connection must be tight, and cell caps must be present. In addition these items should be checked:

32 / 40

What might happen if a trailer is too high when you try to couple?

33 / 40

Select the statement that describes smooth bore tanks:

34 / 40

Why do air brakes take longer to stop than hydraulic brakes?

35 / 40

The most stable tanker shape is:

36 / 40

What is the correct number of red reflective triangles that you should carry?

37 / 40

How should you know when to shift?

38 / 40

What action should you take before driving while drowsy?

39 / 40

The Emergency Response Guidebook (ERG):

40 / 40

Check that the parking brake will hold by____when the parking brake is engaged and the trailer brakes released if not a combination vehicle.

Your score is

The average score is 47%

5/5 - (1 vote)

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.