District Of Columbia 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 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 have one hour to correctly answer a minimum of 16 questions. The Combination test is not a replacement for the Double/Triple endorsement test.
To DMV Handbooks11. If your trailer begins to drift off course while you are backing, you should:
Continue trying to back up without stopping.
Turn the top of your steering wheel in the direction of the drift.
Turn the top of the steering wheel in the direction opposite of the drift.
Return the steering wheel to the 12 o’clock position.