Ridgetop through cuts in a direct line of sight from the roadway should be terminate simultaneously, as this tends to emphasize the curves. If possible, 
avoided: they create an unnatural break in the skyline When possible, a the horizontal curve should begin before the vertical curve section ends. This 
combination of vertical and horizontal curves will make the road appear fitted pleases the eye and, as an added safety feature, “leads” the driver into the 
into the landscape. Vertical and horizontal curves should not begin or horizontal curve. 
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