(Bloomberg) -- The development of the Interstate Highway System in the 1950s made the car the preferred individual mode of ground transportation. This upended residential patterns, creating suburbs and exurbs, and relegated rail to the background.
Sixty years later, however, America has changed. City centers have been revitalized and are once again desirable residential areas. Traffic congestion and pollution are recognized as significant problems, as is the inability to evacuate cities in an emergency. Car-sharing and bike-sharing are on the rise. And technology is in the early stages of reinventing roads in ways that can save lives, cut costs, raise revenue, reduce congestion and build businesses that create jobs of the future. The oldest of infrastructure -- the Romans built roads -- will soon begin to offer a very different experience.
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