Iv V is speed in km/hour and R is radius of the curve, the superelevation e is euqal to

- 1
  
  $\frac{V^{2}}{125 R}$
- 2
  
  $\frac{V^{2}}{225 R}$
- 3
  
  $\frac{V^{2}}{325 R}$
- 4
  
  $\frac{V^{2}}{25 R}$

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