Flashcard 9 - Combination Vehicles Flashcard Set for the CDL

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The correct answer is:

A sliding fifth wheel allows the operator to adjust where the “kingpin weight” (the weight of the front of the trailer) rests on the tractor—providing the ability to shift the kingpin weight toward the front or rear axle of the tractor.


Explanation:

It is also a method of ensuring proper clearance between the rear of the tractor cab and trailer nose.

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