For USA Today by Susan Barnes
When it comes to summertime traditions in the U.S.A., road trips rank right up there with baseball games, days at the beach, barbecues and slices of apple pie.
Just how popular are road trips? According to AAA, more than one-third of Americans are planning to take a vacation of 50 miles or more away from home this year, and the old-school family road trip remains the most popular type of family vacation.
And some of the most popular road trip routes are found along the National Scenic Byways and All-American Roads. In 1991, the National Scenic Byways and All-American Roads programs began through an Act of Congress to “recognize, protect and promote America's most outstanding roads.”