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Doubles & Triples Practice Question 26

TDoubles & Triples · Question 26

A driver who must couple a converter dolly should first:

• AApply the dolly brakes (if equipped) or chock the dolly so it does not roll
• BDrive over it
• CLift it by hand
• DDisconnect the lights

Correct answer: A. Apply the dolly brakes (if equipped) or chock the dolly so it does not roll

Why: Block or brake the dolly so it does not roll while coupling. A rolling dolly can pin the driver or damage equipment.

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

• Q48. The pintle hook latch must be:
• Q1. The Doubles/Triples (T) endorsement is required when operating:
• Q14. Crosswinds affect doubles/triples by:
• Q28. For triples, the air system must be:
• Q41. Where the converter dolly has a brake control of its own (parking spring brake), it should…

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.