EPISODE · Apr 28, 2015 · 56 MIN
The Strange History of Stoplights
from CarStuff · host iHeartPodcasts
Traffic signals are one of the most recognizable - and life-saving - things on the road. But where do they come from, and how do they work? Learn more about your ad-choices at https://www.iheartpodcastnetwork.comSee omnystudio.com/listener for privacy information.
What this episode covers
Traffic signals are one of the most recognizable - and life-saving - things on the road. But where do they come from, and how do they work?
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The Strange History of Stoplights
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