CDL AIR BRAKES PRACTICE TEST - VIRGINIA

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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 Virginia CDL knowledge test. The VA 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 Virginia CDL Manual. Take this VA CDL practice test now to prepare for the actual air brakes test!
1. To test the service brake:
gently try to pull forward with the trailer parking brake on, then release the brake.
shift your transmission to a low gear, pump the brake pedal three times, then hold it down for five seconds.
push the brake pedal firmly while going about 5 mph.
2. Before driving a truck or bus with a dual air brake system, the minimum pressure in both the primary and secondary systems should be at least:
100 psi.
75 psi.
130 psi.
3. If you must stop on a one-way or divided highway, you should place warning devices _______ toward the approaching traffic.
10, 100 and 200 feet
5, 25 and 50 feet
5, 50 and 500 feet
4. When is it safe to leave your vehicle unattended without applying the parking brakes or chocking the wheels?
Never.
Only while you are taking a rest break.
When you are conducting your pre-trip inspection.
5. If your vehicle has an alcohol evaporator, every day during cold weather, you should:
fill it up with oil to prevent alcohol from freezing.
fill it up with oil to prevent the pipes from freezing.
check the alcohol container and fill up as necessary.
6. An ABS system:
gives you more control over the vehicle during braking.
helps you avoid skids caused by over braking.
All of the above.
7. If your brakes fail while you are driving on a downgrade, you should:
take the least hazardous escape route you can.
use an escape ramp if it's available.
All of the above.
8. The braking power of the spring brakes:
is not affected by the condition of the service brakes.
depends on the brakes being in adjustment.
is not affected by the air pressure level.
9. To check that spring brakes come on automatically, the first thing to do is to:
continue to step on and off the brake pedal until the air pressure falls to the manufacturer’s specification.
release the parking brake, move the vehicle forward slowly, and apply the brakes firmly.
turn off the engine, release the parking brake and time the air pressure drop.
10. Your vehicle has air brakes. To stop, you should:
pull the parking brake control knob out.
push the brake pedal down.
release the accelerator, push in the clutch, and shift to Neutral at the same time.
 
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Frequently Asked Questions

You must be at least 15 ½ years old to apply for a learner’s permit. At 16 years and 3 months of age, you can obtain a driver’s license. However, your license will be restricted until you reach 18 years old.

You have to schedule your appointment online. Simply select dates and times according to your preferences and the available options at your chosen Virginia DMV office. Check if your school is enrolled in DMV's remote testing program to take the DMV written test directly in your school.

Make sure you have the following documents:
  • An application for a Virginia Driver's License signed by your parent/legal guardian unless you are over 18 or emancipated.
  • One proof of identity.
  • One proof of legal presence.
  • Two proofs of Virginia residency.
  • Proof of Social Security number (SSN).
You can refer to this guide to check the required documentation.

The DMV written test in Virginia is available in various languages, including English, Amharic (Ethiopian), Arabic, Chinese/Mandarin, Chinese/Mandarin (Traditional), Dari, Farsi, French, German, Haitian Creole, Italian, Japanese, Korean, Kurdish, Mongolian, Nepali, Pashto, Punjabi, Russian, Spanish, Thai, Twi (Akan), Turkish, and Urdu. American Sign Language (ASL) is also available for people who are hearing impaired.

To prepare for the DMV written test, read the Virginia Driver's Handbook. Study road rules and safe driving practices. Verify your knowledge with our free practice tests or sign up for DMV Premium to access additional resources. Once you are satisfied with your score, you are ready for the exam.

The DMV written test in Virginia consists of two parts. The first part includes 10 questions specifically on road signs, while the second part contains 30 multiple-choice questions that verify your general knowledge about traffic laws.

The score required to pass the DMV written test is 80% or higher. You must answer all the questions correctly on the first part about road signs, and you can miss up to 6 questions on the second part. You can't proceed to the second part of the exam if you answer any question incorrectly in the first part.

With a learner’s permit, you may drive under the following conditions:
  • You can operate only with the supervision of a licensed driver who is at least 21 years old, or with a family member who is 18 or older and holds a driver's license, seated near you.
  • You cannot transport more than one passenger under 18, except for siblings.

After obtaining a driver's license, certain restrictions apply until you reach 18 years old:
  • Driving between midnight and 4 a.m. is not allowed, except for work or school activities, with a licensed parent or spouse aged 18 or older, or in case of emergencies.
  • For the first year, you may carry only one passenger under 21, unless accompanied by a parent or guardian seated near you. After one year, you can transport a maximum of three passengers under 21 for school activities or emergencies, or if accompanied by a licensed adult aged 21 or older seated near you.

You need to obtain a driver's license within one year after passing the DMV test, or you will have to retake it. If you're temporarily authorized to be in the U.S., the expiration date of your learner’s permit will match the expiration date shown on the document used to prove your legal presence.

If you're under 18 years old, you're required to wait 15 days while if you're 18 or older, you can retake the DMV written test the next day. However, regardless of age, if you fail the exam three times, you must complete an approved Driver Training School program. After completing the program, you'll need to present the Driver Education Certificate at a customer service center before making another attempt.

VA CDL Air Brakes Test

Number of questions: 25
Correct answers to pass:20
Passing score:80%
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