Maryland cdl Combination - Test 2
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 Maryland 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 and true/false 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 Handbooks15. A trolley valve:
Should be used while driving.
Should only be used to test trailer brakes.
Should be used when parking uphill.