Air Brakes #2
Air Brakes Endorsement Test | Arizona 2025 #2 Page 4 of 4
Train for FREE online with our Arizona CDL air brake test. The official exam test consists of several obligatory parts, with all of them checking your knowledge of different blocks of road rules. If you need to obtain a AZ Class A/Class B driver license in 2025, practice as much as possible. Free sample tests published on our website will help you check and improve your knowledge and boost your grades. Please bear in mind that the requirements for CDL may vary from state to state.
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19 . When an S-cam turns inside a brake drum, the S-cam:
When a brake pedal is pressed and the S-cam is turned, the S-cam presses the brake shoes against the inside of the brake drum. This causes friction and will cause the vehicle to slow.
20 . Brakes out of adjustment will:
Brakes out of adjustment will fade before those that are properly adjusted. Brake adjustment must be checked frequently to help prevent brake issues.
21 . What can happen if the air pressure gets too low in an air brake system?
Pressing and releasing the brake pedal unnecessarily can let air out of the braking system faster than the compressor can replace it. Air brakes may cease to work effectively if the pressure becomes too low.
22 . What color malfunction lamps do vehicles equipped with ABS have?
Anti-Lock Braking System (ABS) malfunction lamps are usually yellow. Even if the ABS isn't working properly, a driver will still have access to the vehicle's usual braking functions.
23 . What is often found in compressed air?
Compressed air in an air brake system usually contains a certain amount of water and compressor oil. The water and oil can damage the brakes if left to accumulate in the system. Tanks must be drained regularly to remove this build-up.
24 . Foundation brakes are used:
Foundation brakes are used on each wheel of a CMV. The most common type of foundation brake is the s-cam drum brake.
25 . While operating on a downgrade, you should brake until you reach a speed that is:
While driving downhill, you should hold down the brake pedal until your vehicle reaches a speed 5 mph below your safe speed, then release the brake pedal. Repeat this process.
2025 Arizona | Frequently Asked Questions
To acquire a CDL Hazmat endorsement in Arizona, you need to pass a written test and a Transportation Security Administration (TSA) background check. First, study the Hazmat section of the Arizona CDL manual. Then, schedule and pass your written test at an Arizona MVD office. Lastly, apply for and pass the TSA background check to receive your endorsement.
To obtain a CDL Hazmat license, you must already possess a valid Commercial Driver's License (CDL). You must also pass a written knowledge test and a TSA background check. Additionally, you should be at least 21 years old, have no disqualifying criminal offenses, and be able to read and speak English well enough to do the job.
When applying for a CDL Hazmat endorsement, you'll need your current CDL, proof of U.S. citizenship or legal status (like a passport or birth certificate), and a completed medical examiner's certificate. You'll also need to provide fingerprints and pass a TSA background check. Finally, you must pass the Hazmat knowledge test at your local DMV.
Yes, there is a dedicated written test for the CDL Hazmat endorsement. This test is designed to evaluate your knowledge of transporting hazardous materials safely. It covers topics like loading and unloading hazardous materials, bulk packaging, and emergency response procedures. It's recommended to study the Hazmat section in the state's CDL manual before taking the test.
The written test for the CDL Hazmat endorsement covers topics such as how to recognize hazardous materials, understanding shipping papers, placarding rules, emergency response procedures, loading and unloading hazardous materials, and safe driving practices with hazardous materials. The test aims to ensure drivers can safely transport hazardous materials.
Yes, there are extra charges associated with acquiring a CDL Hazmat endorsement. The TSA background check fee is approximately $86.50, and the Arizona MVD charges a $10 application fee. The fingerprinting fee varies by location. Keep in mind prices may vary and additional fees may be required depending on your specific circumstances.
Yes, background checks and security clearances are mandatory for obtaining a CDL Hazmat endorsement. Applicants must undergo a federal criminal history background check and fingerprinting conducted by the Transportation Security Administration (TSA). This ensures the driver does not pose a security threat while transporting hazardous materials.
Yes, specialized training and certification are required for the CDL Hazmat endorsement. Applicants must pass a written knowledge test about the transportation of hazardous materials. Additionally, they must undergo a TSA security threat assessment. Upon passing these, the endorsement is added to their Commercial Driver's License.
No, you cannot legally transport hazardous materials without a valid CDL Hazmat endorsement in Arizona, or any other state. The endorsement is necessary to ensure the driver has the necessary knowledge and skills to safely transport hazardous materials. Violating this can result in heavy fines and legal action.
You can add the CDL Hazmat endorsement to your current CDL license. You don't need to apply for a new license, but you will need to pass the Hazmat knowledge test and complete a TSA security threat assessment. Once these steps are completed, the endorsement will be added to your existing CDL.