- A Make sure the first trailer is properly coupled and the dolly tongue is at the correct height Correct answer
- B Disconnect the first trailer
- C Move the cargo
- D Skip the inspection
Why this is the correct answer
Proper sequence: first trailer, dolly, second trailer. Each connection must be inspected before proceeding to the next.
How this topic appears on the test
The Doubles & Triples CDL exam covers Coupling as a recurring theme. Test-writers favor questions that probe whether the applicant has internalized the safe operating procedure, not merely memorized the rule. When you encounter a question on this topic, slow down and verify that the answer you've chosen describes what a careful, defensive driver would actually do — not what is technically permissible.
If you missed this question, that's exactly the right outcome of a practice session: the goal is to surface gaps before the actual test. Open your state CDL manual to the Coupling section and re-read the relevant subchapter. Then come back and run through the rest of the Doubles & Triples practice exam.