Highway 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.
Federal Highway Administration https://www.fhwa.dot.gov/environment/noise/noise_barriers/inventory/
Wisconsin Department of Transportation https://wisconsindot.gov/Pages/projects/by-region/nw/i94hudson/faq.aspx
Subscribe to Cheddar on YouTube: http://chdr.tv/subscribe