- A Drive away immediately
- B Verify that the safety pin or latch is in place after coupling Correct answer
- C Use only the brake
- D Skip the safety check
Why this is the correct answer
Safety pins and latches prevent dolly disconnection. Always verify after coupling.
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.