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Vol. I · No. 37 Texas Edition
Thursday, Nov 5
Xultr
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Tech

What Are Those Doors In Highway Sound Walls For?

SlashGear By staff@slashgear.com (Jules Wang) 0 views 0 comments
What Are Those Doors In Highway Sound Walls For?
Image: SlashGear

Highway sound walls help reduce the negative impacts of noise pollution caused by heavy traffic. But what are the strange doors cut into these walls used for?

SlashGear Original story · www.slashgear.com
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