A highway is a fast road with open access, which means it “can have intersections, driveways or median openings for turning,” explains Huynh. Highways post slower speeds (40 to 60 mph) and are often ...
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Surprising facts about how America’s interstate highway system began
The story of America’s interstates is usually told as a straightforward tale of postwar progress, but the real origins are stranger and more contested than the green signs suggest. The Dwight D.
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