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UPSC Civil Service Exam Questions - Engineering

Q1:

What is the superelevation for a horizontal highway curve of radius 500 m and speed 100 kmph in mixed traffic condition ?

A 8.9%

B 6.2%

C 0%

D 1%

ANS:D - 1%

If you solve the question as per mixed traffic condition you would get 8.9% as answer. But since here the terrain is not specified hence assuming it plain terrain max value of superelevation is capped up to 7% hence the answer is 7%.