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The CDL general knowledge test is required to be taken by all CDL applicants. The New Hampshire CDL test consists of 50 questions. To pass, you must correctly answer at least 40 questions (80%). The general knowledge test covers the contents of the New Hampshire CDL Manual. All CDL applicants (Class A, B and C) must study the following sections: Driving Safely, Transporting Cargo Safely, Air Brakes (if you plan to operate vehicles equipped with air brakes), Vehicle Inspection Test, Basic Control Skills Test, Road Test. In addition, the Class A CDL test will include questions based on the Combination Vehicles section. Take this CDL practice test now to prepare for the actual NH general knowledge test! To get your CDL, you must pass both the knowledge and skills tests. CDL knowledge tests include: General Knowledge, Passenger Transport, Air Brakes, Combination Vehicles, Hazardous Materials, Tanker Vehicles, Doubles/Triples, School Bus, Firefighter. Depending on what class of license (A, B or C) and endorsements you need, you must take one or more knowledge tests. A special endorsement is also required to drive certain types of vehicles. The following endorsements may be used with a Class A, B or C CDL: HazMat (H), Tank Vehicles (N), Tank Vehicles Transporting Hazardous Materials (X) and Passenger Transport (P). The School Bus endorsement (S) is only available for Class A or B CDL, and the Doubles/Triples endorsement (T) is only available for Class A driver's licenses.
1. When should you sound your horn?
When you are about to change lanes.
When you are being tailgated by an aggressive driver.
When steering around an obstacle.
When using your horn can help avoid an accident.
2. Why should you complete an after-trip inspection report?
To prove that you finished your trip.
To help the motor carrier know when the vehicle needs repairs.
So you won't be held responsible for any subsequent damage.
All of the above.
3. When driving on packed snow, you should reduce speed by:
a half.
4. If you are confronted by an aggressive driver, you should:
try to move away safely.
avoid eye contact.
remain calm and relaxed.
All of the above.
5. For fire safety, the correct list of items you should check during your pre-trip inspection is:
fuel and fire extinguisher.
tires, cargo, fuel, electrical and exhaust systems, fire extinguisher.
cargo, fuel, steering wheel, electrical system, fire extinguisher.
cargo, fuel, electrical and exhaust systems.
6. Which of the following statements about drinking alcohol is TRUE?
Coffee and a little fresh air will help a drinker sober up.
Alcohol only impairs judgement, not muscle coordination.
Alcohol only affects people who are not used to drinking.
A 5-ounce glass of 12 percent wine contains the same amount of alcohol as a 12-ounce glass of 5 percent beer.
7. If a worker is close to the roadway in a work zone, you should:
reduce your speed below the posted speed limit.
pull off the road and stop.
drive on the shoulder.
drive at the posted speed limit.
8. Which of these statements is true?
Dual tires that come in contact with each other provide better traction.
A tread depth of 2/32 of an inch is safe for steering axle tires.
Tires of mismatched sizes can used on the same vehicle.
Radial and bias-ply tires should not be used together on the same vehicle.
9. Name some exhaust system parts.
Drag link, spindle and gear box
Mufflers, mounting brackets and vertical stacks
Main spring, axle and font axle hanger
Pitman arm, hydraulic fluid reservoir and tie rod
10. To make sure you always have overhead clearance, always be aware that:
an empty vehicle is taller than a loaded one.
re-paving or packed snow may have reduced the clearances since the heights were posted at bridges and overpasses.
some roads can cause a vehicle to tilt.
All of the above.
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CDL Knowledge Test NH

Number of questions: 50
Correct answers to pass:40
Passing score:80%
Number of questions: 50
Correct answers to pass:40
Passing score:80%
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