Where does this come from, and can I check it?

A gentle sine profile about a hundred millimetres high slows traffic without damage. The figure is taken from UK Government, which is linked in full on this page. Every fact on Mondo Knows names its source rather than repeating an unsourced claim.

Is this really a everyday life fact?

Yes. It sits on the Everyday Life shelf, one of 2,600 sourced facts grouped into space, animals, the human body, history, science and more. Category pages collect every fact in the same field.

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The links under the fact point to a quiz, game, puzzle or calculator on the same subject, and the shelf below shows related facts. The wording here is original, and quoted phrases are marked as quotations.

Mondo Knows Facts

Speed humps are shallow so cars do not scrape

A gentle sine profile about a hundred millimetres high slows traffic without damage British guidance caps a 20 mile per hour hump at roughly 100 millimetres high and 3.7 metres long, with a rounded profile that a normal suspension can absorb. Steeper or shorter ramps would ground low vehicles and punish residents as much as speeders. Signs and markings must make the hump visible, since an unmarked ramp is a hazard in itself. It sits in Mondo's everyday life collection, one of 200 facts that each trace back to the reference below.

Where this comes from

UK Government

Facts that can change over time are reviewed and updated. If something here looks wrong, Mondo would rather know than be confidently incorrect.

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Tags: roads, safety, cities

Speed humps are shallow so cars do not scrape: the short answers

Where does this come from, and can I check it?: A gentle sine profile about a hundred millimetres high slows traffic without damage. The figure is taken from UK Government, which is linked in full on this page. Every fact on Mondo Knows names its source rather than repeating an unsourced claim.
Is this really a everyday life fact?: Yes. It sits on the Everyday Life shelf, one of 2,600 sourced facts grouped into space, animals, the human body, history, science and more. Category pages collect every fact in the same field.
What else can I read about it?: The links under the fact point to a quiz, game, puzzle or calculator on the same subject, and the shelf below shows related facts. The wording here is original, and quoted phrases are marked as quotations.