Morning Overview on MSN
Why blue lights are suddenly popping up above traffic signals
Across the United States, drivers are looking up at intersections and noticing a new, unfamiliar glow: small blue lights ...
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 ...
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