Air Brakes #1
Air Brakes Endorsement Test | Arkansas 2025 #1 Page 4 of 4
Train for FREE online with our Arkansas 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 AR 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 you press the brake pedal in a vehicle with S-cam brakes, air pressure pushes out the rod and moves the:
Alcohol evaporator.
When pressing the brake pedal in a vehicle with S-cam brakes, air will enter the brake chambers. The added air pressure will push out the rods and move slack adjusters, twisting the brake camshafts.
20 . Air brakes use ____ to function.
The brakes in an air brake system use compressed air to function properly.
21 . Vehicles with dual air brake systems:
Maintain air pressure when shut off for periods of less than four hours.
Before driving a vehicle with a dual air brake system, allow time for the air compressor to build up pressure of at least 100 psi in both the primary and secondary systems.
22 . Brakes may get out of adjustment:
If they get wet.
Brakes can get out of adjustment quickly, especially if they are used to the point of overheating. Brake adjustment should be checked frequently.
23 . Emergency brakes:
All trucks, truck tractors, and buses must be equipped with emergency brakes and parking brakes.
24 . Brake fade is a result of:
If brakes are overused, they can become too hot. This overheating causes them to fade, making them less effective at slowing the vehicle.
25 . If using air tanks with manually operated drains, how often should you drain the tanks?
Once every six months
In an air brake system with manually operated drains, the tanks should be drained at the end of each day of driving.
2025 Arkansas | Frequently Asked Questions
To secure a CDL Bus endorsement in Arkansas, you must first hold a valid CDL. Then, pass the Passenger Vehicles endorsement written test. This will allow you to drive any vehicle designed to transport 16 or more people, including the driver. You may also need to pass a skills test in a passenger vehicle if you haven't done so already.
To obtain a CDL Bus license in Arkansas, you need to have a valid driver's license, pass a medical examination, and complete a CDL application. You must then pass the general knowledge test, the passenger transport test, and the school bus endorsement test. Lastly, you need to successfully complete a driving skills test in a vehicle similar to the one you'll be driving.
While specific experience isn't required for a CDL Bus endorsement in Arkansas, you must pass a written test and a skills test. Training is not mandatory but is highly recommended to prepare for these tests. Many opt for professional CDL training schools. Remember, you must already hold a valid Commercial Driver's License (CDL) to get the endorsement.
CDL Bus licenses fall under three main classifications in Arkansas: Class A, B, and C. Class A is for vehicles towing trailers over 10,000 pounds. Class B is for single vehicles over 26,001 pounds or towing a trailer not over 10,000 pounds - this includes most school and city buses. Class C is for vehicles designed to transport 16 or more passengers, including the driver.
No, you cannot use your personal vehicle for the CDL Bus driving test in Arkansas. The vehicle you use for the test must match the type and class of vehicle you plan to drive with your CDL. For a bus endorsement, you must test in a bus of the appropriate size and type.
During the CDL Bus driving test in Arkansas, your ability to safely operate the bus is evaluated. Skills tested include pre-trip vehicle inspection, basic vehicle control (like backing, turning, and stopping), and on-road driving. You may also be evaluated on specific bus operations like loading/unloading passengers, railroad crossing procedures, and emergency exit procedures.
Yes, additional medical prerequisites are required for a CDL Bus endorsement in Arkansas. 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 heart disease that could affect your ability to safely operate a commercial vehicle.
No, it's not permissible to transport passengers without a valid CDL Bus endorsement in Arkansas. The law requires anyone driving a vehicle designed to carry 16 or more passengers, including the driver, to have a CDL with a passenger (P) endorsement. Driving without the proper endorsement can result in legal penalties.
Yes, the CDL Bus endorsement can be added to your existing CDL license in Arkansas. You don't need to apply for a new license. However, you must pass the required knowledge tests and a skills test in the type of vehicle you wish to drive before the endorsement can be added.
Yes, there are restrictions for drivers with a CDL Bus endorsement in Arkansas. They must maintain a clean driving record, pass regular physical examinations, and adhere to hours-of-service regulations. Also, they can't drive if their Blood Alcohol Concentration (BAC) is 0.04% or higher and must submit to random substance abuse testing.