When coupling the second trailer, how far should you back the converter dolly under the trailer?

Until the kingpin locks.. Section 7.2: Back the dolly under the rear trailer until the kingpin locks into the fifth wheel.

When coupling the second trailer, how far should you back the converter dolly under the trailer?

ANSWER BREAKDOWN
  • A. Incorrect. "All the way." is not correct. Back the dolly under the rear trailer until the kingpin locks into the fifth wheel.
  • B. Incorrect. "Until the fifth wheel touches the trailer." is not correct. Back the dolly under the rear trailer until the kingpin locks into the fifth wheel.
  • C. Incorrect. "Halfway." is not correct. Back the dolly under the rear trailer until the kingpin locks into the fifth wheel.
  • D. Correct. Back the dolly under the rear trailer until the kingpin locks into the fifth wheel.