DMV Cartedefr · Missouri · CDL · Combination Test 1

Missouri cdl Combination - Test 1

Number of questions: 20

Passing score: 80%

Acceptable number of errors: 4

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 Missouri 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.

To DMV Handbooks

1. Older trailers are not equipped with spring brakes. This means that if the air supply for a vehicle's air braking system leaks away:

A ×

The trailer will stop normally.

B

The trailer will not have brakes.

C ×

The trailer will speed up.

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