A two-lane two way highway is designed for speed of 80 km/hr. A vertical curve is to be provided at intersection of downward gradient of 1 in 50 with another downward gradient of 1 in 20. (Assume coefficient of longitudinal friction is 0.35 and acceleration is 3.6 km/hr/sec), which of following is/are true for the given data.
1
Length of vertical curve fulfilling overtaking sight distance is 108.23 m
2
Length of vertical curve fulfilling overtaking sight distance is 540.62 m
3
Overtaking sight distance is 415.93 m
4
Overtaking sight distance is 127.45 m