Aha Trivia Stuff Everyone Should Know
Aha Trivia: Stuff Everyone Should Know · ahatrivia.com/mb-railroading-c574fc48f477

What is a subway?

A rapid transit line running underground.

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  1. A train that floats on water
  2. A road tunnel for cars
  3. A rapid transit line running underground ✔

Why: A grade-separated rapid transit line below ground is often called a subway.

Huh, didn't know that: A grade-separated rapid transit line below ground is often called a subway.

The dad joke
That answer goes underground but stands out.
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References

Answer: A rapid transit line running underground. A grade-separated rapid transit line below ground is often called a subway.

  1. Rail transport en.wikipedia.org/wiki/Rail_transport
    A grade-separated rapid transit line running below ground level through a tunnel is often called a subway
    Checked 2026-11-07.

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