Control & OperationQuestion 70 of 120
You are coupling a tractor to a trailer. Which step comes immediately before backing under the trailer?
a.Raise the landing gear fully
b.Remove the wheel chocks
c.Perform the tug test
d.Connect the air lines, supply air to the trailer, and make sure the trailer brakes are locked
Explanation
Charging the trailer air system and locking its brakes keeps the trailer from rolling as the fifth wheel slides under the apron. Raising the landing gear, removing chocks, and the tug test all come after the coupling is made.
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