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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. Which of the following statements about backing is TRUE?
Backing is always dangerous.
When you have to back, you should back and turn toward the driver's side whenever possible.
You should avoid backing whenever you can.
All of the above.
2. The heavier the vehicle:
the less work the brakes must do to stop it.
the higher the center of gravity will be.
the more work the brakes must do to stop it.
None of the above.
3. Confused drivers can be very hazardous. Clues to confusion include:
changing direction suddenly.
driving very slowly.
stopping in the middle of an intersection.
All of the above.
4. The speed limit is 55 mph. Traffic is heavy, moving at 35 mph. What's the safest speed in this situation?
45 mph
40 mph
25 mph
35 mph
5. You may get a clue that a driver may be going to make a turn from:
slow moving or stalled traffic in a traffic lane.
the rear lights of the driver's vehicle.
the driver weaving across the road.
the driver's head and body movements.
6. After a tire has been changed, you should:
wait at least 30 minutes before driving.
stop a short while later and check that the nuts are tight.
deflate the tire to 15 psi.
decrease tire pressure.
7. Which of the following statements about driving in cold weather is true?
You should use windshield washer antifreeze.
Brakes will never fade or fail from excessive heat caused by using them too much.
Exhaust system leaks are less dangerous in cold weather.
An engine cannot overheat when the weather is very cold.
8. On any upgrade, _________ – the more you will have to use lower gears to climb hills or mountains.
the steeper the grade
the heavier the load
the longer the grade
All of the above.
9. Right after it starts to rain, the road is very slippery. Why?
Because black ice may form on the road.
Because rain is very slippery.
Because the water mixes with oil left on the road by vehicles.
None of the above.
10. You are driving on a steep downgrade in the proper low gear. Your "safe" speed is 40 mph. When your speed reaches 40 mph, you should:
apply the brakes to gradually reduce your speed to 35 mph, and then release the brakes.
increase your speed to approximately 45 mph, and then apply release the brakes.
apply the brakes to quickly reduce your speed to 25 mph, and then release the brakes.
maintain your current speed, and apply the brakes when you reach 50 mph to gradually reduce your speed to 40 mph.
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NH CDL Practice Test

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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