CDL AIR BRAKES PRACTICE TEST - UTAH

View instructions
The air brakes endorsement applies to applicants who wish to drive a vehicle with air brakes in Class A, B, or C CDL. To drive a vehicle with air brakes, you must pass the air brake component of the Utah CDL knowledge test. The UT CDL air brakes test consists of 25 questions, and you'll need at least 20 correct answers to pass (80%). The test covers the information found in the air brakes section of the Utah CDL Manual. Take this UT CDL practice test now to prepare for the actual air brakes test!
1. Too little weight on the driving axles can cause:
poor visibility.
longer stopping distances.
mechanical damage.
poor traction.
2. Banked curves:
are reserved for pedestrians.
should always be avoided.
have a safe "design speed".
can be taken at any speed.
3. Tractor and straight truck spring brakes will come fully on when the air pressure drops to a range of:
30 to 35 psi.
55 to 74 psi.
20 to 45 psi.
5 to 15 psi.
4. When the low air pressure warning light and buzzer first come on, you should:
immediately put alcohol into the air system.
downshift and slow down.
bring the vehicle to a safe stop right away.
speed up to restore pressure.
5. The trailer hand valve should:
never be used for parking.
never be used to test the trailer brakes.
be used in driving.
All of the above.
6. Stepping on and off the brake pedal several times:
may result in dangerously thin linings.
may cause air leaks.
reduces the air pressure in the tanks.
All of the above.
7. You supply air to the trailer brake system by:
pulling out the trailer air supply valve.
connecting the tractor service air line to the trailer service glad hand.
plugging the electrical cord into the trailer.
pushing in the trailer air supply knob.
8. Brake drums or discs must not have cracks longer than ____ the width of the friction area.
1/2
1/5
1/4
1/3
9. Parking brakes are:
not required on trailers.
not required on buses.
required on all vehicles.
not required on commercial vehicles with air brakes.
10. Air pressure should build up in a single air system, within about:
10 minutes.
1 minute.
3 minutes.
15 minutes.
 
Page 1 of 3
Next page
NOT SURE YOU WILL PASS? GET CDL PREMIUM NOW! - Learn More

Frequently Asked Questions

To obtain an entry-level learner permit in Utah, you must be 15 years old. After obtaining the permit, you can apply for a class D driver license. Here are the requirements:
  • If you are 17 or younger, it’s mandatory to complete a driver education course and hold the permit for six months.
  • If you're 18, driver education is mandatory, but the six-month waiting period with the learner permit is not required.
  • If you're over 19, driver education is not obligatory, but you must hold your learner permit for 90 days if you don’t complete a driver education course.
Your license will be provisional until you turn 21 years old.


Once you've completed the learner permit application, you can schedule an appointment for your visit at any Utah Driver License office. If you are under 19, please note that you are required to complete 27 hours of high school classroom instruction, or 18 hours of private school instruction, or 30 hours of a Utah-approved online course to prepare for the written test.

When visiting the driver license office, ensure you bring:
  • One proof of identity (if your name has changed, bring legal documentation)
  • Two proofs of Utah residency
  • Proof of your Social Security number
  • One proof of legal presence (if you are not a U.S. citizen)
Check the list of acceptable documents before your appointment.

The DMV written test for obtaining a driver's license in Utah is available in multiple languages, including English, Arabic, Swahili, Dari, Spanish, Portuguese, Mandarin Chinese, Vietnamese, Somali, Tongan, Ukrainian, Korean, French, and Tagalog. Additionally, if you are deaf or hearing impaired, you can require assistance from an ASL interpreter.

To prepare for the DMV written test, you can refer to the official Utah Driver's Handbook. The manual covers various information about road rules, traffic signs, and safe driving practices. Study carefully the different sections and test your knowledge with our free practice tests!

Restrictions with a learner permit:
  • If you are 15, 16, or 17 years old, you can drive only if accompanied by an approved driving instructor, parent, or legal guardian who is a licensed driver, occupying the seat beside you. You can also transport other passengers.
  • If you are 18 years or older, you can drive only if accompanied by a person 21 years or older, who is a licensed driver and occupies the seat beside you. You can also transport other passengers.
Restrictions with a driver license:
  • If you are under 17 years old, you can drive alone except from 12 am to 5 am unless:
- accompanied by a licensed driver who is at least 21 years old, occupying the seat beside you;
- for agricultural, work, or school activities;
- in emergency situations.
  • If you are under 18, for the first six months after obtaining your driver's license, you can transport only family members unless accompanied by a licensed driver who is 21 years or older, or for agricultural assignments or emergencies.

The Utah permit remains valid for a duration of 18 months. If you need to renew your permit or if it expires, you have to pay a fee, complete the application process again, and retake the DMV written test.

If you fail your DMV written test in Utah, you have three chances to pass the exam within six months. If you don't pass after three attempts, you must pay another fee for three additional attempts within six months.

UT CDL Air Brakes Test

Number of questions: 25
Correct answers to pass:20
Passing score:80%
Share This Online CDL Test
Rate this CDL Air Brakes Test
4.7 out of 5
based on 221 votes