CDL AIR BRAKES PRACTICE TEST - ARIZONA

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The air brakes endorsement applies to applicants who wish to drive a vehicle with air brakes in Class A, B, or C CDL. To drive a vehicle with air brakes, you must pass the air brake component of the Arizona CDL knowledge test. The AZ CDL air brakes test consists of 25 questions, and you'll need at least 20 correct answers to pass (80%). The test covers the information found in the air brakes section of the Arizona CDL Manual. Take this AZ CDL practice test now to prepare for the actual air brakes test!
1. If you are being tailgated, you should:
speed up.
move to the left lane.
increase your following distance.
2. The air compressor is connected to:
the radiator.
the transmission.
the engine.
3. Some air brake systems have an alcohol evaporator. Checking the alcohol container and filling it up as necessary:
reduces the risk of ice in air brake valves during cold weather.
helps you avoid wheel lock up.
helps keep the engine cool, as well as lubricating it.
4. Air storage tanks:
hold compressed air for the brakes.
use parts of the service brake systems to stop the vehicle in a brake system failure.
pump air into the air storage tanks.
5. Front brake limiting valves were used to:
prevent overheating of the front tires.
reduce the chance of the front wheels skidding on slippery surfaces.
reduce your speed so further braking or shifting is not required.
6. What is the best way to test the low air pressure warning signal?
Shut the engine off when you have enough air pressure, turn the electrical power on and step on and off the brake pedal to reduce air pressure to below 60 psi.
pump the brakes until the air pressure drops below 45 psi.
step on and off the brake pedal while the engine is running.
7. Brakes out of adjustment can cause the other brakes to:
apply more braking power.
overheat and fade.
last longer.
8. If you are being tailgated, you should:
try to let the other vehicle pass.
drive on the shoulder.
speed up.
9. The heavier the vehicle:
the higher the center of gravity will be.
the less work the brakes must do to stop it.
the more work the brakes must do to stop it.
10. A tank endorsement is:
only required when transporting gases.
required for both liquids and gases.
only required when transporting liquids.
 
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Frequently Asked Questions

The age requirements depend on the type of permit or license you are applying for:
  • If you are at least 15 years and 6 months old, you can obtain a graduated instruction permit.
  • If you are at least 16 but less than 18, you can be issued a graduated driver license (Class G).
  • At the age of 18, you become eligible for a Class D driver's license.
Individuals under 18 can opt for the Permit Test @ Home Program. With this option, you can take the DMV written test online under the supervision of a parent or legal guardian. After passing the test, schedule an appointment at an Arizona MVD office to obtain your permit. If you are 18 years old or older, you can take the exam at a driver license office or at an authorized third-party provider.


To take the DMV test in Arizona, you must bring to an MVD office:
  • A completed application
  • One primary document (U.S. passport, certified copy of a birth certificate…)
  • Two proofs of residency (documents with your name and address from a business, organization, or government agency)
  • Proof of your Social Security Number

If your name is different, show legal proof of the name change.


The DMV written test for the driver's license in Arizona is available in several languages, including: English, German, Vietnamese, Mandarin, Spanish, Arabic, Russian, Italian, French, Tagalog, Korean. A verbal test is offered if you have difficulty reading, made many mistakes on a previous test, or the exam isn’t available in your language. To schedule a verbal test, check the nearest MVD office and make an appointment.

To get ready for the Arizona DMV written test, start by reading the Arizona Driver's Manual. This manual has all the info you need to study for the exam: traffic signs, road rules, and safe driving practices. Then, check what you've learned with our free practice tests and consider signing up for DMV Premium to access additional resources!

The Arizona DMV written test consists of 30 multiple-choice questions and is based on the information provided in the manual. Remember, you have 30 minutes to complete the exam. Taking numerous practice tests and thoroughly studying the handbook will increase your chances of success.

To pass the exam, you need a score of 80% or higher. You should get at least 24 questions right, and you're allowed to miss up to 6 questions out of the total 30. Stay focused and take the time to read the questions carefully.

For the initial 6 months, drivers holding a graduated driver license in Arizona face specific restrictions: 
  • They cannot drive between midnight and 5:00 a.m. unless accompanied by a parent or guardian with a valid license. Driving alone is permitted when traveling to or from sanctioned school activities, places of employment, religious events, or during a family emergency.
  • They cannot transport more than one passenger under 18, except for siblings or when accompanied by a parent or legal guardian in the front passenger seat.
The Arizona instruction permit is valid for a duration of 12 months. Use this time to complete an Arizona MVD-approved driver education program, and after holding the permit for a minimum of 6 months, you can apply for a graduated license.

If you fail the DMV written test on your first attempt, you can return to an MVD office or an MVD Authorized Third Party office the next business day to retake the test. If you fail the exam three times, you have to pay another application fee to take it again.

AZ CDL Air Brakes Test

Number of questions: 25
Correct answers to pass:20
Passing score:80%
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