User:Mrader9/sandbox

= Road curve = Curves on the vertical plane are called vertical curves roads curve.

Transition curve
Is a curve with a gradual change in elevation on the outside of the curve to help drivers comfortably take turns at faster speeds.

Vertical road

Valley curve
Also called a sag curve, this curve dips down and then rises back up. These are placed in the base of hills. The opposite of summit curves

Summit curve
Also called the crest curve, this cure rises and then dips down. At the peak of hills. The opposite of valley curves.

= Reference = Anupoju, Sadanandam. “Curves in Alignment of Highways - Types of Curves.” The Constructor, 10 Mar. 2018, theconstructor.org/transportation/types-curves-highway-alignment/21242/.