If you’re a driver (or even a passenger), you’ve seen them: small color-coded plastic markers in the center, or sometimes at the edge, of the road. They have various names; in the U.K., you’ll hear them called ‘cat’s eyes,’ while in the U.S., they’re usually referred to as ‘road reflectors’ or ‘raised pavement markers.’ While apps like Waze can warn you about risks on the roads, road reflectors make sure you’re aware of important road boundaries and hazards in
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