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The CDL general knowledge test is required to be taken by all CDL applicants. The North Carolina 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 North Carolina 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 NC 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 is not a type of retarder?
2. Whenever you are about to pass a pedestrian, bicyclist, or vehicle, you should assume that they:
are hard to see.
could suddenly move in front of you.
can see you.
will move out of your lane of traffic.
3. Vehicles must be equipped with emergency equipment, including:
first-aid kit
automatic transmission fluid
circuit breakers
warning devices for parked vehicles
4. Controlled braking:
must be used when you need to turn sharply while braking.
can be used to keep your vehicle in a straight line and allow you to turn if necessary.
involves pumping the brakes while keeping steering wheel movements very small.
involves locking the wheels and then releasing the brakes.
5. When backing, as soon as you see the trailer getting off the proper path, you should:
turn the top of the steering wheel in the direction of the drift.
to keep a firm grip on the steering wheel and continue backing.
turn the top of the steering wheel in the opposite direction of the drift.
None of the above.
6. Combination vehicles _________ than single CMVs.
are safer in bad weather
require more driving skill
are much easier to drive
All of the above.
7. If your vehicle is equipped with a front brake limiting valve, to ensure normal stopping power make sure the control is:
in the "slippery" position.
in the "off" position.
in the "neutral" position.
in the "normal" position.
8. Drivers should try to park their vehicle so that:
the vehicle is protected by trees.
they can pull forward when they leave.
they can do a walk around inspection.
there is at least one curb next to the vehicle.
9. The definition of Gross Vehicle Weight is:
Total weight of a single vehicle + cargo
Axle weight + cargo weight
Total weight of cargo
Total weight of a single vehicle minus fuel
10. To make an emergency using the stab braking method, you should:
fully apply the brakes until the wheels lock up, then stay off the brake until the vehicle has slowed down.
apply your brakes all the way, release the brakes when the wheels lock up, and apply the brakes again as soon as the wheels start rolling.
apply firm pressure to the brake pedal and hold for 6 seconds, then pump the pedal three times.
apply the brakes as hard as you can without locking the wheels.
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NC CDL Practice Test

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