Assuming the safe stopping sight distance to be 80 m on a flat highway section and with the radius of the negotiable horizontal curve is 125. What would be the required setback distance? (Take length of circular curve greater than safe stopping sight distance)
Use cos 20° = 0.94 & sin 20° = 0.34
1
9.12 m
2
8.75 m
3
16.5 m
4
6.35 m