Keystone Parkway Proves Highways Can Be Green

Keystone Parkway Proves Highways Can Be Green
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Who says that highways can’t be green? Not the environmentally friendly folks in Carmel, Indiana. They’ve built a double teardrop roundabout that may be the greenest highway intersection in the United States. When the time came for the city to make a major upgrade to Keystone Parkway, one of their busiest intersections, they decided to… Continue Reading...