Who decided traffic lights?

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Lilly Schimmel asked a question: Who decided traffic lights?
Asked By: Lilly Schimmel
Date created: Sat, Mar 20, 2021 10:14 AM
Date updated: Fri, Jun 24, 2022 9:51 AM

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Top best answers to the question «Who decided traffic lights»

It wasn't until 1920 that a Detroit police officer named William L. Potts devised the three-colored system—red, yellow, and green. A few years later, the lights started changing during timed intervals.

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