Nathaniel Bullard, Columnist

America Is Getting Older. So Are Its Drivers.

People over 65 aren't giving up their licenses, even as teenagers put off a traditional rite of passage.

Who needs a license?

Photographer: Spencer Platt/Getty Images
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The U.S. population will exceed 400 million by 2060, according to Census Bureau projections released this week. That includes an increase in the older population that will have major implications for American transportation.

While the size of each age group is expected to grow, the teenage population will rise only 8 percent as the group over 65 nearly doubles in size, growing by 45 million and accounting for more than half the total expansion.