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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.
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1.

____ are the cause of more than half of all accident-related truck driver deaths.

Truck rollovers
Motorcycles
Slippery roads
Pedestrians
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.

Rollovers happen when drivers:

Turn too quickly.
Do not driving fast enough.
Pay attention to the road.
Drive illegally.
5.

Pull out the trailer air supply control to test:

The parking brake.
The trailer emergency brakes.
The trailer service brakes.
The landing gear.
6.

All trailers made after ____ must be equipped with Anti-Lock Braking Systems (ABS).

1943
1998
2009
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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