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Why does green mean go and red mean stop?
Why is there traffic? How do traffic lights work? How do they know when to turn red and green? Why does green mean go and red mean stop? Why are cars able to go faster than they are allowed to go with the speed limit? Wh...
About This Episode
Why does green mean go and red mean stop? is an episode from But Why: A Podcast for Curious Kids by Vermont Public. Why is there traffic? How do traffic lights work? How do they know when to turn red and green? Why does green mean go and re...
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This episode belongs to But Why: A Podcast for Curious Kids.
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Episode Details
Published May 1, 2026, 36:03 long, audio available.
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