An empty rear trailer on a multi-trailer rig:
Correct. Lighter trailer = more vulnerable to crack-the-whip and crosswinds. Empty rear trailers in multi-trailer rigs roll easily.
Category: Doubles/Triples
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.