A tunnel the size of a soccer field -- approximately 7,192 square meters -- is set to be complete along the Dongbu Expressway, and it will be both sound-proof and also generate its own solar energy.
As a tunnel that is both soundproofing and power generating, it’s a world first of its kind.
The Seoul Metropolitan Government announced on April 17 that the 479-meter tunnel will be completed by the end of year as part of its expansion project for the highway.
The city of Seoul is to install a soundproof and solar-energy generating tunnel along the Dongbu Expressway. (Seoul Metropolitan Government)
See URL for details : http://www.korea.net/NewsFocus/Sci-Tech/view?articleId=157163&pageIndex=1
Source : Korea.net
