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Drivers who want to drive combination vehicles must pass the combination vehicles test. The Wyoming CDL combination test consists of 20 questions, and you'll need at least 16 correct answers to pass (80%). The test covers the combination vehicles section of the Wyoming CDL Manual. Take this practice test now to prepare for the actual WY CDL combination test!
1. Poor weight balance:
improves handling.
makes it easier to turn.
increases fuel efficiency.
can make vehicle handling more difficult.
2. Emergency brakes are:
not required on buses.
required on all vehicles.
not required on commercial vehicles with air brakes.
not required on doubles.
3. How do you find out how many seconds of following distance you have?
Wait until the vehicle ahead of you passes a pavement marking, shadow or landmark. Then count off the seconds until you reach the same spot.
Wait until the vehicle ahead of you passes a pavement marking or some other clear landmark, then use the stopwatch on your mobile phone to see how long it takes you to reach the same spot.
Pass a stationary object and count how many seconds it takes the vehicle ahead of you to reach the same spot.
None of the above.
4. Which of the following is NOT a good rule for using turn signals?
Put your turn signal on after the turn.
Signal well before you turn.
Signal continuously until you have completed the turn.
Cancel your signal after you have turned.
5. If your truck catches fire, the first thing you should do is to:
pull into a service station and call for help.
get off the vehicle, open the hood and start shooting foamĀ to keep the engine cool.
pull off the road and park in an open area.
get the vehicle off the road and park near other vehicles.
6. When you back under a trailer:
back the tractor slowly.
use lowest reverse gear.
make sure the trailer brakes are locked.
All of the above.
7. When backing a trailer, you should:
turn the steering wheel toward the direction you want to go.
try to position your vehicle so you can back on a curved path.
turn the steering wheel in the opposite direction of the turn.
avoid using the brakes.
8. If your truck has automatic transmission, you should downshift:
when you need to accelerate.
whenever road conditions allow.
after entering a curve.
when going down grades.
9. A vehicle inspection should be done in the same order each time:
because it's much quicker.
because it is required by law.
so you are less likely to forget something.
because the report must be written in that order.
10. Brake fade results from, and is affected by:
excessive heat caused by using the brakes too much.
excessive heat caused by not relying on the engine braking effect.
brakes out of adjustment.
All of the above.
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WY CDL Combination Test

Number of questions: 20
Correct answers to pass:16
Passing score:80%
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