Word: tunnard
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Dates: during 1963-1963
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...wrong kind of curve can be dangerous when one is moving at more than a mile a minute, and no curve at all can be lethal. The new art-science of freeway design forms the most original section of a new book called Man-Made America, by Planners Christopher Tunnard and Boris Pushkarev (Yale...
Hugging or Violating. Authors Tunnard and Pushkarev emphasize the need for an "essential unity of plan and profile"-a short sag on a long curve, for instance, should be avoided in favor of the harmonious gradual one. In fact, the authors recommend continuously curving roadways, on the ground that they not only are more esthetic, but also tend to keep the driver interested and therefore alert. Surprisingly, in the average terrain, such highways are very little, if any, longer, and no more expensive to build than the standard design of straight stretches connected by short curves. Uniform median width should...