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Highway Engineering - Engineering

Q1:

The minimum ratio of the radii of two circular curves of a compound curve, is kept

A 1.25

B 1.5

C 1.75

D 2.0

ANS:B - 1.5

To ensure a safe and smooth transition from curve to curve the radius of the flatter curve should not be disproportional to the radius of the sharper curve.

A ratio of 2:1 or preferably 1.5:1 should be adopted.