Air Brakes #1
Air Brakes Endorsement Test | Utah 2025 #1 Page 3 of 4
Train for FREE online with our Utah 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 UT 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 . On a truck with air brakes, the braking system’s air compressor:
Cleans the brakes.
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.
14 . If the low air pressure warning signal comes on in a vehicle with air brakes, the driver should:
If the low air pressure warning signal comes on while you are operating a vehicle with air brakes, you should stop and safely park the vehicle as soon as possible. It is essential that you are able to stop safely while you still have some braking power remaining.
15 . What kind of force must emergency brakes use?
Electrical
Because air pressure can eventually leak away, the emergency brakes in an air brake system must be held on by mechanical force.
16 . Failing to drain air tanks could result in:
In an air brake system, the air tanks must be periodically drained to remove accumulations of water and compressor oil. If water is not removed, it could freeze in cold weather and cause brake failure.
17 . Before driving a vehicle with air brakes, you should ensure that the spring brakes come on automatically when:
Driving uphill.
Before driving a vehicle with air brakes, you should ensure that the spring brakes come on automatically when air tank pressure falls to a level between 20 and 45 psi. You can do this by chocking the wheels and releasing air from the braking system by stepping on and off the brake pedal. Once the pressure drops to an unsafe level, the parking brake valve should pop out and spring brakes should come on.
18 . Most heavy-duty vehicles use:
Quadruple air brake systems.
Most heavy-duty vehicles use dual air brake systems. A dual system has two separate air brake systems with a single set of controls.
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2025 Utah | Frequently Asked Questions
A CDL Class A license in Utah is defined as a commercial driver's license that allows the holder to operate any combination of vehicles with a gross combination weight rating (GCWR) of 26,001 pounds or more, provided the towed vehicle(s) weigh more than 10,000 pounds. It includes vehicles like tractor-trailers, truck and trailer combinations, and flatbeds.
A Class A CDL license allows you to operate a variety of large vehicles such as tractor-trailers, truck and trailer combinations, tank vehicles, livestock carriers, and flatbeds. This license is also required for operating vehicles that tow trailers or other vehicles with a GVWR of over 10,000 pounds.
To obtain a Class A CDL license in Utah, you must be at least 18 years old for intrastate driving, or 21 for interstate. You need a valid Utah driver’s license, pass a vision exam, and obtain a medical certificate. You must also pass written knowledge tests and a three-part skills test, which includes a pre-trip vehicle inspection, a basic controls test, and a driving test.
In Utah, you must be at least 18 years old to qualify for a Class A Commercial Driver's License (CDL) for intrastate (within the state) driving. However, to drive interstate (across state lines), transport hazardous materials, or drive a school bus, you must be at least 21 years old.
Specific endorsements are not required for a Class A CDL license, but they can provide additional driving privileges. Endorsements include: H (Hazardous Materials), N (Tank Vehicles), P (Passenger Transport), S (School Buses), T (Double/Triple Trailers), and X (Combination of Tank Vehicle and Hazardous Materials). Each endorsement requires passing a specific knowledge test.
The Class A CDL skills test in Utah includes three parts: a pre-trip vehicle inspection, a basic controls test, and a driving test. The pre-trip inspection assesses your ability to inspect your vehicle before driving. The basic controls test evaluates your ability to maneuver and control the vehicle. The driving test evaluates your on-road driving skills.
Yes, limitations can be imposed on Class A CDL license holders in Utah. These restrictions are based on the driver's abilities and the type of vehicle they tested in. For instance, if a driver takes the skills test in a vehicle without air brakes, they will have an "L" restriction, indicating they are not authorized to operate vehicles with air brakes.
In Utah, the written Class A CDL test is primarily offered in English. However, some locations may offer the test in Spanish as well. It's important to note that federal regulations require all commercial drivers to read and speak English sufficiently to converse with the general public, understand highway signs and signals, respond to official inquiries, and make entries on reports and records.
Yes, accommodations can be provided for the Class A CDL written test for individuals with disabilities in Utah. The state complies with the Americans with Disabilities Act (ADA). You'll need to provide documentation of your disability and specify your required accommodation when scheduling your test. It's recommended to contact the Utah Driver License Division for detailed procedures.
Yes, you can retake the Class A CDL written test in Utah if you don't pass it the first time. However, you must wait until the next day to retake it. There's also a retest fee that you'll have to pay each time you retake the test. It's advisable to study thoroughly before reattempting to increase your chances of passing.
