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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. Before you back into an area, you should __________ overhanging hazards like trees, branches or electric wires.
get out of the vehicle and check for
check your mirrors to be aware of
ask someone else to check for
look out of the windows for
2. A steering wheel play of more than ___ degrees can make it hard to steer.
3. When the wheels of a trailer lock up, the trailer will tend to swing around. This is more likely to happen when:
the trailer is fully loaded.
the trailer is overloaded.
the trailer is empty or lightly loaded.
None of the above.
4. When should you downshift automatic transmissions?
When going up steep grades
When going around curves
When you use the brake pedal during normal driving
When going down grades
5. _______ is the distance your vehicle travels, in ideal conditions, from the time you see a hazard until your brain recognizes it.
Perception distance
Reaction distance
Total stopping distance
Braking distance
6. To maintain alertness while driving, you should:
have another person ride with you.
avoid heavy foods.
avoid medications that cause drowsiness.
All of the above.
7. B:C type fire extinguishers are suitable for dealing with:
electrical fires and burning liquids.
wood fires.
tire fires.
cloth and paper fires.
8. If driving a new vehicle, you should familiarize yourself with the controls and equipment:
before you start driving.
within the first 50 miles.
as you drive.
after pulling into a service station.
9. ABS:
causes your wheels to lock when you break hard.
is not required on newer trucks.
gives you more control when you brake.
helps increase brake pressure.
10. Which of the following helps keep the engine cool in hot weather?
Driving faster to force more air into the radiator.
Making sure the anti-lock braking system is on.
Making sure there is enough engine oil.
All of the above.
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NH CDL Practice Test

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