Highway Engineering - Engineering

Q1:

The length of a transition curve, is governed by

A rate of change of radial acceleration

B rate of change of super-elevation

C both (a) and (b)

D neither (a) nor (b)

ANS:C - both (a) and (b)

Rate of change of centrifugal acceleration.
L= v3/cR.

Rate of change of superelevation
L=150X.

For plain and rolling terrain
2.7V2/R.