May 27, 2021
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5:44Now PlayingHighway noise barriers are intended to reduce traffic sounds for nearby residents and businesses. And there are over 3,000 miles of these walls lining U.S. highways. However, recent studies show they might not work as well as intended. And could actually be amplifying noise in some locations.
Further reading:
Undark
Federal Highway Administration
Jalopnik
Wisconsin Department of Transportation
Smithsonian Mag
Sound Walls
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