Safety chains on a converter dolly are required to:
Correct. Safety chains catch the dolly if the pintle hook releases or fails — preventing the trailer behind from breaking loose.
CDL Practice Question #348
Category: Doubles/Triples
Why this question matters
This question is one of 50 in our Doubles/Triples bank. The reasoning above comes directly from the AAMVA CDL Manual, the source document used by every U.S. state DMV. Memorizing the underlying rule — not just the letter answer — is what separates passing on the first attempt from a return trip and another fee.