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

Custom sign typography prevents letter halation glow under bright night headlights. The figure is taken from NIST, 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 1,090 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

Highway road signs use specially engineered high-contrast fonts

Custom sign typography prevents letter halation glow under bright night headlights

Highway road signs use standardised high-contrast typefaces such as Highway Gothic or Clearview, engineered specifically for legibility at high speeds. Letter shapes feature expanded counter-spaces and open loops to prevent halation glow when bright vehicle headlights illuminate retroreflective sign coatings at night.

Where this comes from

NIST

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: traffic, typography, roads

Highway road signs use specially engineered high-contrast fonts: the short answers

Where does this come from, and can I check it?: Custom sign typography prevents letter halation glow under bright night headlights. The figure is taken from NIST, 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 1,090 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.