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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. When going down a long downgrade, the speed of your vehicle will likely:
stay the same.
None of the above.
2. Which of the following is not a rule for using turn signals?
Cancel your signal after you have turned
Don't signal unless another vehicle is behind you
Signal early
Signal continuously
3. If you feel drowsy while driving, you should:
get some coffee.
stop yawning.
pull off the road and get some rest.
fall asleep.
4. The minimum tire tread depth for front tires is:
4/16 inch
2/32 inch
4/32 inch
8/32 inch
5. The one-way check valve:
keeps air from going out if the air compressor develops a leak.
keeps the axles in place.
keeps your wheels from locking up when you brake hard.
supplies air to the trailer air tanks.
6. You can determine if your vehicle is equipped with ABS (anti-lock braking system) by:
checking for a yellow ABS malfunction lamp on the instrument panel.
checking if your vehicle was manufactured after March 1, 1998.
looking for wheel speed sensor wires coming from the rear of your brakes.
All of the above.
7. Unless excepted, shipping papers must list:
the colors of the materials.
a proper description of the truck.
an emergency response telephone number.
the address of the driver.
8. To avoid rollbacks when you start, you should:
if you have manual transmission, partly engage the clutch before you take your right foot off the brake.
release the parking brake only when you have applied enough engine power.
put on the parking brake whenever necessary.
All of the above.
9. The header board, if equipped, should:
never be used for cargo.
can be dangerous.
not be used in case of a crash or emergency stop.
block the forward movement of any cargo you carry.
10. When driving at night, you should:
drive slowly enough to see obstacles with your headlights.
use dark lenses if possible.
put your own high beams on if other drivers don't put their low beams on.
look directly at the lights of oncoming vehicles.
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WY CDL Knowledge 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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