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UPSC Civil Service Exam Questions - Engineering

Q1:

Assuming the safe stopping sight distance to be 80 m on a flat highway section and with a setback distance of 10 m, what would be the radius of the negotiable horizontal curve ?

A 800 m

B 160 m

C 80 m

D 70 m

ANS:C - 80 m

Here, R = S^2/8M = 80 * 80/8 * 10 = 80 m.