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Doubles & Triples Practice Question 51

TDoubles & Triples · Question 51

A 'lunette ring' is:

• AA wedding ring
• BThe towing eye on a trailer that mates with the pintle hook
• CA type of brake
• DA gear

Correct answer: B. The towing eye on a trailer that mates with the pintle hook

Why: Lunette rings are the towing eyes on trailers/dollies that engage with the pintle hook. They must be the right size and rating for the pintle.

How this question fits the Doubles/Triples test

Each additional articulation point multiplies rearward amplification. A driver pulling triples must steer earlier, brake sooner, and inspect twice as much equipment as a single-trailer driver.

Study technique for this topic

Learn the correct trailer placement order by weight, the procedure for converting a single to a double, and the special inspection items unique to converter dollies and pintle hook assemblies.

Related Doubles/Triples practice questions

• Q56. When triples encounter a low overhead clearance:
• Q9. Air supply lines for the rear trailer pass through:
• Q22. A common cause of separation between a tractor and trailing unit is:
• Q35. When swapping which trailer is in front, drivers should re-verify:
• Q48. The pintle hook latch must be:

Continue your CDL preparation

The Doubles & Triples portion of the CDL knowledge exam covers more than this single question. Use this site's full Doubles & Triples bank to drill every topic, then test yourself with one of our state-specific practice sets to confirm you are ready for the actual DMV exam in your state. Always check your state's CDL handbook for any local addenda before the test day.

If you are still building your overall CDL foundation, start with the General Knowledge bank — every CDL applicant must pass it — and then work outward to the endorsements you plan to add.