If the trailer brakes are locked and you try to pull the trailer (tug test), the trailer should:

Not move.. Section 6.4: The trailer should not move. This confirms the kingpin is locked.

If the trailer brakes are locked and you try to pull the trailer (tug test), the trailer should:

ANSWER BREAKDOWN
  • A. Incorrect. "Move forward easily." is not correct. The trailer should not move. This confirms the kingpin is locked.
  • B. Correct. The trailer should not move. This confirms the kingpin is locked.
  • C. Incorrect. "Slide sideways." is not correct. The trailer should not move. This confirms the kingpin is locked.
  • D. Incorrect. "Bounce." is not correct. The trailer should not move. This confirms the kingpin is locked.