CDL AIR BRAKES PRACTICE TEST - NEW HAMPSHIRE

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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 New Hampshire CDL knowledge test. The NH 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 New Hampshire CDL Manual. Take this NH CDL practice test now to prepare for the actual air brakes test!
1. What should you do to correct a drive-wheel braking skid?
Stop braking, turn the steering wheel quickly, push in the clutch, and countersteer.
Fully apply the brakes, turn the steering wheel quickly, push in the clutch, and countersteer.
Turn in the same direction as the skid.
None of the above.
2. Older trailers do not have spring brakes. If the air supply leaks away:
there will be no emergency brakes.
the trailer will stop normally.
the ABS won't work properly.
All of the above.
3. Supply pressure gauges tell you:
when the air pressure in the tanks falls below 60 psi.
when the pressure in the system drops below 60 psi.
how much air pressure you are applying to the brakes.
how much pressure is in the air tanks.
4. What factors can cause brakes to fade?
Dirt roads and in unpaved yards.
Slippery surfaces and shaded areas.
Gravel and tar.
Excessive heat and brakes out of adjustment.
5. Overloading a vehicle with cargo can have negative effects on all of the following except:
Speed control
Braking
Weight limits
Steering
6. If your vehicle has an alcohol evaporator, every day during cold weather, you should:
check the alcohol container and fill up as necessary.
fill it up with oil to prevent the pipes from freezing.
fill it up with oil to prevent alcohol from freezing.
ensure that compressed air usually has some water and some  compressor oil in it.
7. An Anti-lock Braking System (ABS):
keeps your wheels from locking up when you brake hard.
lets you drive faster.
increases your normal braking capability.
always shortens your stopping distance.
8. A low air pressure warning signal is required on:
Warning signals are optional.
all vehicles with air brakes.
all vehicles with air brakes built after 2009.
all vehicles with air brakes built after 2005.
9. If the air pressure gets too low:
you should set the parking brake.
ABS will help maintain vehicle control.
the brakes will not work.
the brakes will lock up.
10. The s-cam forces the brake shoes away from one another and presses them against the inside of the brake drum. It is called the s-cam because:
"S" stands for "Shoes".
it is shaped like the letter "S".
it is a safe-driving brake.
it applies a "Shock" to the brakes.
 
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Frequently Asked Questions

You can start learning to drive at the age of 15 ½, under the supervision of a parent/guardian or a licensed adult who is at least 25 years old. However, you become eligible to apply for a driver’s license (class D) only when you reach the age of 16. If you are between 16 and 21 years old, you may apply for a youth operator license. For individuals under 18, it is mandatory to attend an approved driver education program and complete 40 hours of supervised driving.

To take the DMV written test, it’s advisable to schedule an appointment. Choose a specific New Hampshire DMV branch, date, and time. While walk-in services are available, customers with appointments are given priority.
If you're a first-time applicant for a driver's license, make sure you have the following documents:
  • Completed Driver License Application (DSMV 450).
  • Proof of identity. 
  • Proof of residency. 

If you are under 18 years of age, additional requirements include:
  • Green Driver Education Completion Certificate issued by your driver education instructor.
  • A Parent or Guardian Authorization Certificate.
  • A completed Certification of Additional Supervised Driving signed by a parent or guardian.

The DMV written test is provided in English, French, Spanish, Arabic, Mandarin, Portuguese, Farsi, and American Sign Language. An automated oral test is also available for individuals who do not read English. If you prefer this option, please inform the customer service representative when you take the exam.

The best way to prepare for the DMV written test is by reading the New Hampshire Driver’s Handbook, which contains information about road signs, safe driving practices, and road rules in New Hampshire. After studying the manual, test your preparation with our free practice tests!

The DMV written test in New Hampshire consists of 40 multiple-choice questions and is conducted on a touch screen monitor. You'll be given 40 minutes to complete the test. Each question presents four possible answers, and you must select the correct one by touching the corresponding letter on the screen.

You need to answer at least 32 out of 40 questions correctly. If you miss more than 8 questions, the test will automatically end. It's important to stay focused during the exam and take the time to read the questions carefully to minimize errors and pass the DMV written test on the first attempt.

For drivers under 18 years of age with a youth operator license, there are specific restrictions:
  • Driving a motor vehicle is not allowed between 1:00 a.m. and 4:00 a.m.
  • For the first six months, driving a motor vehicle with more than one passenger under 25 years of age (except siblings) is prohibited unless accompanied by a licensed adult who is at least 25 years old.
  • Operating a motor vehicle with more passengers than available seat belts is not permitted.

New Hampshire doesn’t issue permits. If you are under 21, after passing the required tests (vision, knowledge, and road), you’ll receive a temporary license valid for 60 days. The youth operator license will be mailed to your address within 60 days. This license will be vertically-oriented and will expire when you reach 21 years old. At that point, you can apply for a renewal of your driver's license to obtain a horizontally-oriented license.

If you fail the DMV written test, you'll need to wait for 10 calendar days before you can take it again. During these days, review the manual once again and concentrate on areas where you may need additional preparation to improve your knowledge for the next attempt.

NH CDL Air Brakes Test

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