1. Rollovers happen when:
ABS is working effectively.
The driver of a vehicle in front of a truck is moving to slowly.
A truck driver is driving too fast.
A truck driver is driving too slowly.
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Combination #2
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 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 25 multiple-choice questions, and applicants will need to correctly answer a minimum of 20 questions to pass. The Combination test is not a replacement for the Double/Triple endorsement test.
Number of Questions
25
Passing Score
20
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To Pass
0
Correct
0
Incorrect
0
6. Before a trip, you can make sure air flows to all trailers by:
Feeling for air at the front shut-off valve.
Checking for moving air inside of each trailer.
Listening for air at the rear shut-off valve.
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7. Push in the trailer air supply control to:
Activate the emergency brakes.
Supply the trailer with air.
Deactivate the air brakes.
Sound the horn.
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