Air Brakes #1
Air Brakes Endorsement Test | Arizona 2025 #1
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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1 . 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.
2 . 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.
3 . 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.
4 . Manual air tank drains should be:
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. Manually operated air tank drains must be opened daily to remove this build-up.
5 . Having ABS on only one axle:
If you have an Anti-Lock Braking System (ABS) equipped on only the tractor, only the trailer, or only one axle, you will still have more control over the vehicle when braking than you would without ABS. You should brake normally.
6 . During an applied leakage test, what is the maximum leakage rate that is safe for a single vehicle with air brakes?
It is important to know the maximum air loss rate that is safe for your specific vehicle. A single vehicle with air brakes should have a leakage rate no higher than 3 psi in a minute during an applied leakage test.
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2025 Arizona | Frequently Asked Questions
To secure a CDL Bus endorsement in Arizona, you must first hold a valid Arizona CDL. Then, pass the passenger endorsement written test. Complete a specialized training course and pass a skills test in the type of bus you wish to drive. Lastly, submit all necessary documents and fees to the Arizona Motor Vehicle Division.
To obtain a CDL Bus license in Arizona, you need to have a valid Arizona driver's license and be at least 21 years old. You need to pass vision and medical exams, have a clean driving record, and complete a CDL training course. After that, pass the written knowledge exam and the road skills test for the type of bus you want to drive.
Yes, specific training is necessary for a CDL Bus endorsement in Arizona. You'll need to complete a CDL training course that covers bus-specific topics like inspecting buses, handling passengers, and emergency procedures. After the course, you'll need to pass a written knowledge test and a road skills test in the type of bus you'll be driving.
In Arizona, CDL Bus licenses fall under Class B or Class C. Class B CDL is for a single vehicle with a GVWR of 26,001 or more pounds, or any such vehicle towing a vehicle not in excess of 10,000 pounds. Class C CDL is for any single vehicle, or combination of vehicles, that does not meet the definition of Class A or Class B, but is designed to transport 16 or more passengers.
No, you cannot use your personal vehicle for the CDL Bus driving test. You must take the test in the same type of vehicle for which you are trying to get a license. This means if you're applying for a bus endorsement, you must take the test in a bus that fits the specific class of CDL you're seeking.
During the CDL Bus driving test in Arizona, you will be evaluated on skills like pre-trip inspection, basic vehicle control, and on-road driving. You may need to demonstrate maneuvers such as turns, intersections, railway crossings, stopping, backing up, and expressway operations. You'll also be tested on safety procedures for loading/unloading passengers and emergency situations.
Yes, additional medical and physical prerequisites are required for a CDL Bus endorsement. You must pass a Department of Transportation (DOT) physical examination every two years. This exam assesses your vision, hearing, blood pressure, and checks for conditions like diabetes or epilepsy that could affect your driving ability. You must also be physically capable of performing bus driver duties.
No, it is not permissible to transport passengers without a valid CDL Bus endorsement in Arizona. If you're caught driving a commercial vehicle designed to carry 16 or more passengers (including the driver) without the proper endorsement, you could face serious penalties, including fines, suspension of your license, and even jail time.
Yes, the CDL Bus endorsement can be added to your existing CDL license in Arizona. You don't need a new application for the entire license, but you will have to pass the Passenger Transport Test. You'll also need to provide proof of physical fitness and pass a vision test.
Yes, there are restrictions for drivers with a CDL Bus endorsement in Arizona. Drivers must not have any serious traffic violations within the last three years. They also must pass a physical examination every two years, have good hearing and 20/40 vision, and cannot be colorblind. Additionally, they must maintain a logbook of their driving activities.
