Air Brakes #1
Air Brakes Endorsement Test | Arizona 2025 #1 Page 3 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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13 . An alcohol evaporator is especially important:
Some air brake systems contain an alcohol evaporator. This evaporator introduces alcohol into the system to help prevent ice from forming in cold weather.
14 . A wig wag is:
Vehicles with air brakes are required to be equipped with a low pressure warning device. A wig wag is a type of low air pressure warning device. This device drops a mechanical arm into the driver's view if the pressure in the tanks drops to a level between 55 and 75 psi.
15 . A slack adjuster should move no more than ____ from where it is attached to the push rod.
Before a trip, you should check each slack adjuster after parking, setting wheel chocks, and disengaging the parking brake. Pull the slack adjusters to make sure that they do not move more than about one inch from where the push rod is attached. If they move more than one inch, they may be out of adjustment and will need to be fixed.
16 . When parking, you should not use the parking brake if:
If your brakes are hot after coming down a steep grade, you should not use your parking brake when parking. Let your brakes cool before applying the parking brake or risk damaging the brakes.
17 . 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.
18 . What does an air compressor do in an air brake system?
In an air brake system, the air compressor pumps air into the air storage tanks. The air compressor is controlled by the air compressor governor.
2025 Arizona | Frequently Asked Questions
To acquire a CDL Tank endorsement in Arizona, you must first have a Commercial Driver's License (CDL). Then, study the Arizona Commercial Driver License Manual’s tank vehicle section. After that, schedule and pass the Tank Vehicle endorsement written test at an Arizona Motor Vehicle Division (MVD) office. The endorsement will be added to your CDL upon passing the test.
To obtain a CDL Tank license, it's essential to first have a Commercial Driver's License (CDL). Then, you need to study the tank vehicle section of the Commercial Driver License Manual. Once you're prepared, schedule and pass the Tank Vehicle endorsement written test at your local Motor Vehicle Division (MVD) office. The endorsement is added to your CDL upon passing.
While specific training or experience is not legally mandatory for a CDL Tank endorsement in Arizona, it's highly recommended to understand the unique handling characteristics and safety concerns of tank vehicles. Studying the tank vehicle section of the Arizona Commercial Driver License Manual thoroughly is crucial. Practical experience or training can significantly improve your chances of passing the endorsement test.
Yes, to obtain a CDL Tank endorsement in Arizona, you must pass an additional written test that focuses on the knowledge required to safely operate a tank vehicle. This includes understanding the vehicle's handling characteristics, inspecting tank vehicles, and understanding the effects of surge and liquid movement on vehicle stability.
The written test for the CDL Tank endorsement in Arizona includes subjects such as tank vehicle inspection, safe driving techniques, loading and unloading procedures, and emergency response. Additionally, it covers topics like identifying hazardous materials, understanding weight distribution, and proper placarding requirements.
The CDL Tank endorsement assessment primarily focuses on knowledge rather than specific maneuvers. It evaluates your understanding of inspecting tank vehicles, recognizing high center of gravity and its effects, handling stability and surge, safe driving rules, emergency procedures, and understanding the operation of special purpose tanks.
Yes, drivers with a CDL Tank endorsement must comply with federal and state regulation regarding load limits, vehicle inspections, and hours of service. They also must handle hazardous materials appropriately if they have a Hazardous Materials (HazMat) endorsement. Additionally, they cannot operate a tank vehicle under the influence of alcohol or drugs.
No, a valid CDL Tank endorsement is required to transport liquid or gas materials. This requirement is strictly enforced under federal and state laws. Driving without the proper endorsement can lead to fines, license suspension, and even imprisonment. It's essential to obtain the correct endorsements for the specific type of cargo you'll be transporting.
The CDL Tank endorsement can be added to an existing Commercial Driver's License. You don't need a fresh application. However, you'll have to pass a knowledge test specific to tank vehicles. Once you pass the test, the endorsement will be added to your CDL, allowing you to transport liquid or gas materials legally.
Yes, handling hazardous materials with a CDL Tank endorsement requires additional training and certification. Drivers must obtain a Hazardous Materials (HazMat) endorsement, which involves passing a written test and a TSA background check. Additionally, they must follow specific safety protocols when loading, unloading, and transporting these materials to prevent accidents and spills.