Aha Trivia Stuff Everyone Should Know
Aha Trivia: Stuff Everyone Should Know · ahatrivia.com/mb-truck-transportation-c8709f578bda

What does a semi-tractor use to tow a semi-trailer?

A fifth wheel.

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  1. A hitch ball
  2. A fifth wheel ✔
  3. A tow bar

Why: Semi-tractors have a fifth wheel hitch for towing semi-trailers.

Huh, didn't know that: Semi-tractors have a fifth wheel hitch for towing semi-trailers.

The dad joke
The fifth wheel is not a spare tire, it's the hitch that makes the trailer go round.
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References

Answer: A fifth wheel. Semi-tractors have a fifth wheel hitch for towing semi-trailers.

  1. Truck en.wikipedia.org/wiki/Truck
    Semi-tractors ("artics" in the UK) have a fifth wheel for towing a semi-trailer instead of a body.
    Checked 2026-11-07.

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