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The CDL general knowledge test is required to be taken by all CDL applicants. The Wyoming 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 Wyoming 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 WY 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 statements about hydroplaning is true?
If your vehicle is hydroplaning, you should use the brakes to slow down.
Hydroplaning is more likely if tire tread is worn.
Hydroplaning is less likely if tire pressure is low.
Hydroplaning usually occurs at speeds lower than 30 mph.
2. The use of brakes on a steep downgrade is:
a supplement to the braking effect of the engine.
the main braking factor.
dangerous, and should be avoided at all costs.
much more effective than the engine braking effect.
3. An Anti-lock Braking System (ABS):
always shortens your stopping distance.
lets you drive faster.
keeps your wheels from locking up when you brake hard.
increases your normal braking capability.
4. Serious traffic violations include:
excessive speeding.
erratic lane changes.
driving a CMV without obtaining a CDL.
All of the above.
5. Empty trucks have the best braking. True or False?
It depends on the truck.
It depends on the cargo.
6. If you realize you are going to be later to your destination than you expected, you should:
deal with it and accept the delay.
speed up.
exceed the posted speed limit when no other vehicles are near.
do your best to avoid the delay.
7. Overloading can have bad effects on all of the following except:
Exhaust system
Speed control
8. When you park your vehicle and turn off the engine:
keep the vehicle in the lane.
apply the parking brake.
activate your right turn signal.
move the gear shift to first gear, if possible.
9. When backing you should:
not use a helper.
use driver-side backing.
back and turn toward the right side.
avoid making pull-ups to reposition your vehicle.
10. The height of a vehicle's center of gravity is important for safe handling. Why?
Trucks with a high center of gravity have better traction.
A high center of gravity means you are less likely to tip over.
Trucks with a high center of gravity can roll over at the posted speed limit for a curve.
All of the above.
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WY CDL Practice Test

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