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
B. 64m
C. 80m
D. 60m
Answer:D
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 B. 64m C. 80m D. 60m