If an ascending gradient of 1 in 50 meets a descending gradient of 1 in 50, the length of summit curve for a stopping sight distance of 80 m will be_______________?

(A) zero (X)
(B) 64m (X)
(C) 80m (X)
(D) 60m ()

Answers: If an ascending gradient of 1 in 50 meets a descending gradient of 1 in 50, the length of summit curve for a stopping sight distance of 80 m will be 60m.