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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. Wheel rims that have had welding repairs:
should not be used.
should be placed in the front.
are safe.
None of the above.
2. On dry pavement, the braking distance when traveling at 55 mph is about:
142 feet.
419 feet.
61 feet.
216 feet.
3. Drivers should inspect their cargo and its securing devices within the first _______ after beginning the trip.
15 miles
50 miles
25 miles
100 miles
4. Skids happen whenever:
tires lose their grip on the road.
dual tires come in contact with each other.
ABS is not working.
the weight limit is exceeded.
5. In vehicles with air brakes, the air compressor governor:
controls when the air compressor will pump air into the air storage tanks.
controls when the air storage tanks will pump air into the air compressor.
controls how much air the air compressor will pump into the air storage tanks.
None of the above.
6. For safety during a trip, you should:
watch gauges for signs of trouble.
use your senses to check for problems.
check critical items when you stop.
All of the above.
7. To prevent fire, during the en route inspection you should check the tires, wheels, and truck body for signs of:
a fire extinguisher.
front-wheel skids.
8. If you are involved in a collision and not seriously hurt, you should:
do your best to care for the injured.
protect the area.
notify the authorities.
All of the above.
9. When you leave your vehicle you should:
apply the service brake.
release the parking brake.
leave the key in the ignition.
None of the above.
10. You should be aware that many car drivers closely follow large vehicles especially:
in the city.
on the highway.
in bad weather.
when crossing a bridge.
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KY CDL Practice Test

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