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99% Invisible
99pi.org
did:plc:fzu6cqfvkc5rwzdcbsda3lda
What the world's most advanced traffic system can—and can't—do for the city that invented gridlock.
Learn all about how a city's traffic lights work on the latest episode of Service Request, out now on the 99% Invisible podcast feed 👉 https://bit.ly/40SmEiJ
2026-03-24T18:03:16.998Z