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The CDL general knowledge test is required to be taken by all CDL applicants. The Kentucky 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 Kentucky 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 KY 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. If driving in a foggy area, you should NOT:
use roadside highway reflectors as guides.
slow down before you enter fog.
turn on 4-way emergency flashers.
use high beams for best visibility.
2. Weaving across the road or drifting from one side to another is typical of:
impaired drivers.
slow drivers.
confused drivers.
3. If you experience a loss of hydraulic pressure, you should do all of the following except:
Use the parking brake
Pump the brakes
Put the transmission in Neutral
4. The speed limit is 55 mph. Traffic is heavy, moving at 35 mph. What's the safest speed in this situation?
40 mph
25 mph
35 mph
45 mph
5. On wet roads, you must drive slower to be able to stop in the same distance as on a dry road. Reduce speed by about _______ when driving on a wet road.
60 percent
70 percent
6. When you have to back, you should always try to back toward the driver's side because:
you can see better and watch the rear of your vehicle out the side window.
it feels more natural.
backing toward the left side is more dangerous.
None of the above.
7. If you swing wide to the left before turning right:
you may damage the service brakes.
another driver may try to pass you on the left.
another driver may try to pass you on the right.
None of the above.
8. When starting your vehicle, oil pressure should come up to normal:
within 5 minutes of driving.
in about two minutes.
within seconds.
in about a minute.
9. If you have to drive off the road to avoid a collision, you should:
keep one set of wheels on the pavement, if possible.
avoid braking.
stay on the shoulder until your vehicle has come to a stop.
All of the above.
10. When an aggressive driver confronts you, you should:
avoid eye contact.
make eye contact.
sound your horn and move to the left lane.
return gestures and shouts.
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KY CDL Knowledge Test

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