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1943
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1998
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2009
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California CDL Permit Test - Combination
(From the 2020 California CDL driver handbook)
| Number of questions: | 20 |
| Passing score: | 17 |
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 California Commercial Driver Handbook. 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 17 questions to pass. The Combination test is not a replacement for the Double/Triple endorsement test.
Passing grade —
3 or fewer errors
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1.
All trailers made after ____ must be equipped with Anti-Lock Braking Systems (ABS).
2.
A loss of air pressure in the emergency line will cause:
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The suspension springs to extend.
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The tractor protection valve to open.
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The emergency brakes to activate.
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3.
In a sudden turn, the ____ trailer is the most likely to turn over.
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Front
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Last
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Middle
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4.
How much space should be between the upper and lower fifth wheel?
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About five inches of space
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A maximum of two inches of space
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No space
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5.
After completing a pre-trip inspection, you should ensure that the:
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Service line valve is closed.
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Trailer hand brake is applied.
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Emergency line valve is open.
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6.
When connecting a converter dolly to a second trailer, the trailer height should be ____ the center of the fifth wheel.
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Level with
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Slightly higher than
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Slightly lower than
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7.
An air supply control lever should be in its "normal" position when you are:
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Changing a tire.
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Applying the trailer emergency brakes.
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Pulling a trailer.
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