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Why Are Highway Signs Green?

Highway signs are a ubiquitous part of Americas infrastructure iconography. The U.S. highway shields are probably the most well-known mass-produced piece of aluminum in the country. However, the countless green signs that dot every thoroughfare are a subtle staple for millions of journeys, from daily commutes to Read more...

http://jalopnik.com/why-are-highway-signs-green-1849811499

 

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