🔍CDL Pre-trip Inspection — Question 10 of 20

Which type of mechanism is used to engage and hold the kingpin on a tandem axle trailer?

Answer: A

The tandem release arm with locking pins

The tandem release arm with locking pins, if so equipped, would be the slide mechanism to engage and hold the kingpin on a tandem trailer.

All choices

  • AThe tandem release arm with locking pins
  • BTandem locking hubs
  • CA tandem pindle hook
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CDL Pre-trip Inspection Test Info

Questions on Exam

Oral examination

Passing Score

Must demonstrate competency%

Time Limit

Skills test typically 30-60 minutes

The Pre-trip Inspection test content is federally standardized, so this question applies in every state. Age limits, fees, and testing procedures do vary — check your state's CDL requirements.

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