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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. Air tanks usually hold enough compressed air to allow the brakes to be used _________ even if the compressor stops working.
for one stop
several times
for one day
for 3 days
2. Texting is:
the most dangerous distraction.
about as safe as adjusting the radio.
safer than  engaging in conversation with a passenger.
safer than talking on a cell phone.
3. The maximum height for a vehicle in North Dakota, before it will be classified as an oversized load, is:
20 feet
14 feet
15 feet
18 feet
4. If a car suddenly cuts in front of you, creating a hazard, you should NOT:
stay close behind the car and honk your horn.
signal and change lanes to avoid the car, if possible.
slow down to prevent a crash.
All of the above.
5. If you must stop on or by a one-way or divided highway, you must place warning devices ___ feet, ___ feet, and ___ feet toward the approaching traffic.
10; 100; 200
20; 200; 400
15; 150; 300
5; 50; 100
6. Whether or not you load and secure your load yourself, you are responsible for:
knowing your cargo is properly secured.
recognizing overloads and poorly balanced weight.
inspecting your cargo.
All of the above.
7. When water collects on the road. your vehicle can:
stop suddenly.
None of the above.
8. Perception Distance + Reaction Distance + Brake Lag Distance + Braking Distance = ?
Total Air Pressure
Stopping Distance - (minus) Brake Fade Distance
Partial Stopping Distance
Total Stopping Distance
9. What is a common cause of tire fires?
Cold tires
Duals that touch
Loose lug nuts
All of the above.
10. For an electrical equipment fire or a gasoline or oil fire, use:
a type A:B:C or B:C fire extinguisher.
a type B:C fire extinguisher only.
a type D fire extinguisher only.
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ND CDL Knowledge 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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