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Michigan 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 Michigan 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.
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Passing grade —
4 or fewer errors
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1.
Keeping cargo low can:
Prevent a rollover.
Help you drive faster.
Make turns more dangerous.
2.
In a double or triple combination, the ____ trailer should be directly behind the cab.
Lightest
Heaviest
Smallest
3.
Combination vehicles need extra space on the road because they:
Drive more slowly than other commercial motor vehicles.
Are heavier than other commercial motor vehicles.
Need more space to turn and stop than other commercial motor vehicles.
4.
How much space should be between the upper and lower fifth wheel?
About five inches of space
A maximum of two inches of space
No space
5.
If an air supply control is in its "emergency" position:
The vehicle will increase speed.
The trailer emergency brakes will be applied.
The air supply to the trailer will increase.
6.
The service air line is often controlled by the foot brake and is attached to the ____ valves.
Relay
Supply
Emergency
7.
More than half of all accident-related truck driver deaths are caused by:
Rollovers.
Slippery roads.
Other drivers.
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