Railways
If a railway curves back on itself like a hairpin turn, it is called a horseshoe curve. The diameter of the curve, however, is usually much larger than that of a road hairpin. See this example at Zlatoust or Hillclimbing for other railway ascent methods.
Read more about this topic: Hairpin Turn
Famous quotes containing the word railways:
“There is nothing in machinery, there is nothing in embankments and railways and iron bridges and engineering devices to oblige them to be ugly. Ugliness is the measure of imperfection.”
—H.G. (Herbert George)