Practice question

Converter dolly's wheel and axle configuration includes what?

  1. A fifth wheel and one or two axles
  2. A nose wheel and three axles
  3. Two wheels and four axles
  4. A third wheel and two axles

Answer: A — A fifth wheel and one or two axles

Converter dollies used between two trailers have a fifth wheel on their neck to couple with the trailers and to allow articulation, plus one or two axles to support the load. The fifth wheel is what lets the dolly connect and pivot as the vehicle turns, while the axles carry the weight of the load behind the hitch. A nose wheel or a third wheel isn’t part of the converter dolly’s standard wheel-and-axle setup, so the typical description is a fifth wheel plus one or two axles.

Practice more: Arkansas CDL Doubles and Triples Practice Test →