Word: cloverleaf
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...internal-combustion car, providing gradual curves, smooth surfaces, low grades, road markers-and some helpful innovations. One was the parkway, which was born along the Bronx River in New York's Westchester County in 1922 and pioneered the principle of separated opposing lanes. Another was the cloverleaf, the essential invention that lets traffic on two divided highways cross and merge in all possible directional combinations without interrupting flow; the first was built at Woodbridge...
...good roads also have a cost in monotony. The antiseptic highway stretches on and on and on. The green-and-white signs are the same. The little clusters of commerce-at-the-cloverleaf are eminently the same. Even the jargon on the menus of the identical restaurants ("char-broiled steak smothered in mushrooms sauteed in fresh country butter") is the same. Yet, happily enough, as the freeway driver highballs from one similar place to another, leisurely and nostalgic souls who want to sample the color and culture of America's side roads can do so readily...
...tooling along the superhighway when the signs suddenly begin to snap up before your eyes. You want to get off at the interchange. But where? There it is -no -yes -better hurry -and you spin into the cloverleaf with the sickening feeling that you're probably wrong and doomed to go miles out of your...
...starting the jumps higher; opening-night suburbanites could watch U.S. Team Captain William Steinkraus win the nerve-stretching ''Democrat'' Memorial Challenge Trophy* and still catch the midnight train home. Thomas also pepped up the show with a rodeo touch: cowgirls racing quarter horses around a cloverleaf barrel course. Another innovation almost anyone could have anticipated: a class for Shetland ponies. No entry named Macaroni though...
Dangerous Location. But in the Circle of Willis (named for English Anatomist Thomas Willis, who described it in 1664), surgery is tricky. Into the circle, like highways converging into a cloverleaf, the four ascending arteries pour the brain's blood supply, and from the circle branch off the principal feeder lines from which oxygen is extracted for the brain's ceaseless activity. Located inside the skull about the eye-and-ear level, the Circle of Willis is in too dangerous a place for surgeons to cut into its vessels. Yet the different segments of the circle...