Aha Trivia Stuff Everyone Should Know
Aha Trivia: Stuff Everyone Should Know · ahatrivia.com/mb-traffic-safety-f8e12dbde748

Why are roads crowned or sloped?

To drain water and improve grip.

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  1. To drain water and improve grip ✔
  2. To slow the engine
  3. To raise the signs

Why: Crowned roads shed water, reducing standing water and improving traction in wet weather.

Huh, didn't know that: Crowned roads shed water, reducing standing water and improving traction in wet weather.

The dad joke
A crowned road drains the rain.
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References

Answer: To drain water and improve grip. Crowned roads shed water, reducing standing water and improving traction in wet weather.

  1. Road safety en.wikipedia.org/wiki/Road_safety
    Most roads are cambered (crowned), that is, made so that they have rounded surfaces, to reduce standing water and ice
    Checked 2026-11-07.

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