Practice question

For the Kentucky CDL Combination Vehicles test, which statement is correct about trailer height?

  1. Close every shut-off valve before moving the combination.
  2. The trailer should be low enough to be raised slightly by the tractor.
  3. Use actual loaded weight instead of GVWR or GCWR for CDL class decisions.
  4. Use the trailer hand valve for normal braking while driving.

Answer: B — The trailer should be low enough to be raised slightly by the tractor.

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