You discover a flat tire on the rear trailer of a triple. You should:
Correct. A flat tire affects rig stability and brake load. Pull off safely, use warning devices, and address the tire.
CDL Practice Question #366
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.