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The CDL general knowledge test is required to be taken by all CDL applicants. The North Dakota 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 Dakota 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 ND 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. Drivers should not assume that the heights posted at bridges and overpasses are correct. Why?
The bridge/overpass may have been rebuilt since the heights were originally posted.
Packed snow or repaving may have reduced the clearances since the heights were posted.
The weight of a cargo van changes its height.
Some roads can cause a vehicle to tilt.
2. When driving on slippery surfaces, you should:
not pass slower vehicles unless necessary.
make turns as quickly as possible.
change lanes often.
All of the above.
3. Driving at night is _______ driving during the day.
about the same as
safer than
more dangerous than
None of the above.
4. Which of the following is NOT a reason for hydraulic brake failure?
Brake fade on long hills
Stab braking
Loss of hydraulic pressure
All of the above.
5. If you've been drinking alcohol, only ____ will sober you up.
a cold shower
black coffee
6. Brake fade results from:
excessive use of the service brakes.
excessive speeding.
excessive smoke.
excessive wear.
7. Service brakes should:
always be checked before applying the brakes.
be checked before each trip.
only be checked by a mechanic.
All of the above.
8. Front-end header boards:
protect you from your cargo in case of a crash.
protect you from your cargo in case of an emergency stop.
block the forward movement of your cargo.
All of the above.
9. If brakes fail on a long downgrade, you should:
turn off the engine as soon as you.
use an escape ramp if it is available.
set the parking brake.
pump the brake pedal 3 times.
10. Skids caused by acceleration can usually be stopped by:
coming to a complete stop.
taking the foot off the accelerator.
speeding up.
applying the brakes firmly.
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ND CDL Knowledge Test

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