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Massachusetts 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 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.
You have made error so far
Passing grade —
4 or fewer errors
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1.
When connecting a converter dolly to a second or third trailer, the trailer height should be:
Slightly higher than the center of the fifth wheel.
Level with the center of the fifth wheel.
Slightly lower than the center of the fifth wheel.
Next to the center of the fifth wheel.
2.
Using the trailer hand brake while experiencing a trailer jackknife will:
Stop the skid.
Straighten the trailer.
Increase traction.
Continue the skid.
3.
Fully-loaded rigs:
Are less likely to roll over than empty rigs.
Are more likely to roll over than empty rigs.
Are just as likely to roll over as empty rigs.
Should not be driven.
4.
When uncoupling a trailer, landing gear should be:
Raised completely.
Lowered halfway.
Just off the pavement.
Firmly on the ground.
5.
To prevent a rollover, a driver should:
Keep cargo low.
Place cargo high.
Keep cargo loose.
Turn quickly.
6.
An Anti-Lock Braking System (ABS):
Allows wheels to lock up.
Prevents wheels from locking up.
Makes it easier to turn a large vehicle.
Assists with the operation of brake lights.
7.
Simply changing lanes can cause:
A “crack-the-whip” effect, resulting in a rollover.
A trailer to straighten out.
Confusion over which lane the driver is hoping to use.
Other drivers to reduce their speed.
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