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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. When an aggressive driver confronts you, you should:
return gestures and shouts.
make eye contact.
avoid eye contact.
2. Which of the following statements about drinking alcohol is true?
Alcohol first affects judgment and self-control, which are necessary for safe driving.
Only time will sober you up.
All of the above.
3. When your drive wheels have poor traction, you should:
turn the retarder on.
only use the retarder on the front wheels.
turn the retarder off.
4. Axle weight is:
the weight transmitted to the ground by one axle or one set of axles.
the maximum safe weight your tires can carry at a specified pressure.
the weight of all the axles added together.
5. Empty trucks require greater stopping distances. True or False?
False, but only for trucks built on or after March 1, 1998.
6. To test your parking brake, do the following:
Speed up to 5 mph, then set the parking brake.
Set the parking brake while going downhill.
Set the parking brake, and gently pull against it in a low gear.
7. Hydroplaning:
only occurs at extremely high speeds.
only happens when tire pressure is higher than normal.
can occur at speeds as low as 30 mph.
8. To test for hydraulic leaks, you should:
pump the brake pedal three times, then hold the pedal for five seconds. The pedal should not move.
apply the brakes firmly using the brake pedal and check to see if the brake pedal returns to its normal position.
use the stab braking method, then re-apply the brakes as soon as you can.
9. In an emergency, if you have to drive off the road you should:
avoid using the brakes until your speed has dropped.
keep one set of wheels on the pavement, if possible.
All of the above.
10. How do you test hydraulic brakes for leaks?
Pull forward against parking brake to make sure the hydraulic brakes holds.
Pump the brake pedal three times, then apply firm pressure to the pedal and hold for five seconds. The pedal should not move.
Pump the brake pedal ten times and see if it holds.
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Number of questions: 50
Correct answers to pass:40
Passing score:80%
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