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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. Which of the following will not prevent distracted driving?
Clearing the vehicle of any unnecessary objects.
Planning your route before you begin driving.
Using your phone only when there is no traffic around you.
2. At dawn, dusk, in rain or snow, to make yourself easier to see you should:
use the low beams.
use the high beams.
use the emergency flashers.
3. If a shipping paper describes both hazardous and non-hazardous products, the hazardous materials must be:
entered first.
identified by an "H" placed before the shipping description.
written in a larger font.
4. Which of the following is a reason to cover cargo?
To protect people from spilled cargo
To protect the cargo from weather
All of the above.
5. To check the signal lights, do the following:
Turn off all the lights, turn on the right turn signal lights, and turn on the stop lights.
Turn on all the lights, turn off the stop lights, and turn off the left turn signal lights.
Turn off all the lights, turn on the stop lights, and turn on the left turn signal lights.
6. Under-loaded front axles:
can make the steering axle weight too light to steer safely.
can cause tire failure.
can improve traction.
7. A tank endorsement is:
required for both liquids and gases.
only required when transporting gases.
only required when transporting liquids.
8. Why should you avoid driving too near the edge of the road?
Driving too near the edge of the road can cause the top of your vehicle to hit roadside objects.
To keep other vehicles from passing you.
To get a better view of the road ahead.
9. Which of the following is NOT a common cause of vehicle fires?
Headlights out of adjustment
Broken fuel pipe
Flammable cargo
10. What is a pull up when referring to truck driving?
When a driver stops and pulls forward to get a better position.
A driving maneuver used to pull your vehicle over to the side of the road and stop.
A specific maneuver used to decelerate smoothly in the exit lane.
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OK CDL Practice Test

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