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Automotive experts explain how the familiar turn signal click prevents accidents

You’ll notice the small, rhythmic click of a turn signal more than you realize, and […] ...
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Have you ever wondered how traffic signals work? Here's a look behind the scenes.

KNOX COUNTY, Tenn. — There are 91 traffic signals in Knox County with more on the way. Have you ever wondered how those lights know when to change and who makes sure they work? In part, it's up to ...