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The CDL general knowledge test is required to be taken by all CDL applicants. The Oklahoma 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 Oklahoma 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 OK 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. Empty trucks have the best braking. True or False?
It depends on the cargo.
2. The following are some causes of vehicle fires:
Tailgating while smoking
Tight turns and gravel roads
Under-inflated tires and duals that touch
3. Vehicles must be equipped with emergency equipment, including:
spare electrical fuses.
2 battery-operated flashlights.
4. Slippery surfaces usually:
make it easier to stop.
can cause lack of steering power.
make it more difficult to stop.
5. Gross vehicle weight (GVW) is:
the value specified by the manufacturer as the loaded weight of a combination vehicle.
the total weight of a single vehicle and its load.
the total weight of the vehicle, including the load and any trailers.
6. Name 2 causes of tire fires.
Under-inflated tires and duals that touch.
Driver smoking and bleeding tar.
Loose connections and poor ventilation.
7. When you're in an accident and not seriously hurt, to help any injured parties you should:
Keep the injured person warm.
Give the injured person a cold drink.
Get the injured person to stand up.
8. If a vehicle is equipped with ABS, when you start the engine:
the wheels will lock up.
the spring brakes will come on.
the ABS indicator light on the dash should come on and then turn off.
9. When approaching a double railroad track, you should:
rely upon the presence of warning signals.
remember that a train on one track may hide a train on the other track.
expect to hear a train when it's approaching.
10. If a trailer does not have spring brakes, to keep the trailer from moving you should:
park on a slight decline.
use wheel chocks.
use the service brakes.
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CDL Knowledge Test OK

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