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

Rotating underside cones notify deaf-blind pedestrians when crossing signals turn green. 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

Pedestrian crossing boxes feature spinning tactile cones underneath

Rotating underside cones notify deaf-blind pedestrians when crossing signals turn green

Pedestrian crossing push-button boxes in many countries incorporate a small spinning tactile cone on the underside of the housing. When the safe walking signal turns green, the cone rotates, allowing visually impaired and deaf-blind pedestrians feeling the unit to know when it is safe to cross.

Where this comes from

NIST

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Tags: traffic, accessibility, signals

Pedestrian crossing boxes feature spinning tactile cones underneath: the short answers

Where does this come from, and can I check it?: Rotating underside cones notify deaf-blind pedestrians when crossing signals turn green. 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.