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Wyoming CDL Permit Test - Combination

Number of questions: 20
Passing score: 16
Directions: All applicants who are applying for a Class A CDL should be prepared to take the Combination test. This test covers information found in Section 6 of the Wyoming Driver License Manual for Commercial & Heavy Vehicles. Section 6 provides the information needed to safely operate tractor-trailers, doubles, triples, and straight trucks with trailers. The test is made up of 20 multiple-choice questions, and applicants will need to correctly answer a minimum of 16 questions to pass. The Combination test is not a replacement for the Double/Triple endorsement test.
You have made error so far
Passing grade —
4 or fewer errors
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1.
All trailers made after ____ must be equipped with Anti-Lock Braking Systems (ABS).
1943
1998
2009
2.
Bobtail tractors are ____ to stop than tractors attached to full semitrailers.
Quicker
Easier
More difficult
3.
Before backing your tractor under the trailer, make sure your trailer brakes are:
Disengaged.
Locked.
Deactivated.
Dry.
4.
____ are the cause of more than half of all accident-related truck driver deaths.
Truck rollovers
Motorcycles
Slippery roads
Pedestrians
5.
Rollovers happen when drivers:
Turn too quickly.
Do not driving fast enough.
Pay attention to the road.
Drive illegally.
6.
Pull out the trailer air supply control to test:
The parking brake.
The trailer emergency brakes.
The trailer service brakes.
The landing gear.
7.
An air supply control lever should be in its "normal" position when you are:
Changing a tire.
Applying the trailer emergency brakes.
Pulling a trailer.
Using your spring brakes.
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