When you encounter a breakaway in your doubles (a trailer separates):
Correct. Maintain control of what remains, brake gently and progressively, secure the area with warning devices, contact dispatch.
CDL Practice Question #388
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.