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Episode 1335 min

How Traffic Lights Decide Whose Turn It Is

How does a traffic light know you are waiting—and why might it keep you waiting anyway? Follow one quiet evening's request from a sensor beneath the road to a cabinet of carefully timed decisions, then along an avenue of neighboring signals. A gently curious bedtime tour of the city's patient choreography.

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Take your time. The story starts when you’re ready.

Settle in. There’s nothing you need to remember.

Episode artwork for How Traffic Lights Decide Whose Turn It Is

A note before you listen

Welcome back, my sleepy friends. Get comfortable, let your breathing slow, and follow along for as long as you like. If you drift off somewhere along the way, the story will keep you company.

Whenever you're ready

Something to wonder about.
Nothing to keep you up.

Find a comfortable corner. Let the day get a little quieter.
We’ll take it from here.