4 ms·
I can't give you chapter and verse on this, but when the first autobahns were built, they were composed of straight sections and constant curvature bends. This
by theoh 11y ago
I can't give you chapter and verse on this, but when the first autobahns were built, they were composed of straight sections and constant curvature bends. This was perceived by engineers to be the rational way. Landscape designers (who were also involved) eventually convinced the engineers to adopt more sinuous curves, which of course also create transitions (clothoid or Cornu spiral sections) which made the roads easier to drive on.