The superelevation to be provided in horizontal curves of radius R in hill roads is given by -

- 1
  
  $\frac{V^{2}}{127 R}$
- 2
  
  $\frac{V^{2}}{17.5 R}$
- 3
  
  $\frac{V^{2}}{225 R}$
- 4
  
  $\frac{{(V + 8)}^{2}}{127 R}$

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