Cat’s eyes in the road
Little reflective studs sunk into the road surface and run over by every car.
Category: Streets & signs
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Feature. They are built to be driven over.
Invented by Percy Shaw in Yorkshire in the 1930s, a road stud has reflective lenses set in a rubber pad. When a tyre runs over it, the lens is pressed down and wiped clean by the rubber and rainwater, so the stud keeps working.
Source: Cat’s eye (road), Wikipedia.
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