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 State of Delaware Commercial Driver License Manual. 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.

Stop the skid.
Straighten the trailer.
Increase traction.
Continue the skid.

May not work correctly.
May feel squishy.
Will squeal loudly when used.
Will be extremely sensitive.

Is the same on all vehicles.
Is essential to the safe operation of a vehicle.
Includes ensuring that the fifth wheel plate is not greased.
Can be learned over time.

Is located on the front of a trailer.
Is located on the instrument panel.
Prevents air from escaping an air brake system.
Should always be open.

Delaware CDL Permit Test - Combination

When testing ____, you should apply your vehicle's brakes with the hand control while moving the vehicle forward slowly.

The ____ trailer is the most likely to turn over if a driver takes a turn too quickly.

Using the trailer hand brake while experiencing a trailer jackknife will:

When backing up while coupling a trailer, the tractor should be positioned:

If oil and water build up in your vehicle's air tanks, the brakes:

Proper coupling technique:

A shut-off valve:

Number of questions:	20
Passing score:	16

The Anti-Lock Braking System
The emergency braking system
The trailer service brakes

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