If V is the Design Speed in Km/h

Answer: B. V²/225R

If V is the design speed in km/h and R is the radius of the curve, superelevation ‘e’ will be V²/225R.

Solution

Superelevation is the rising of the outer edge of the road with respect to the inner edge to counter the centrifugal force that will act on the vehicle. It is also known as Cant or Banking. It is denoted by ‘e’.

If V is the Design Speed in Km/hr and R is the radius of the curve in m, the superelevation ‘e’ is given by 

e = V²/225R

Where,

V = Velocity in Km/hr

R= Radius of curve in m

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