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SUBJECT
Design of Horizontal Alignment: Various design element to be considered in the horizontal alignment are: Design speed Type and length of transition curve Width of
Curve: Curves are provided in highways in order that the change of direction at the intersection of straight alignments either in horizontal or vertical plane,
Intermediate sight distance (ISD): On a horizontal curve, the requirement of overtaking sight distance can not always be satisfied. In such cases overtaking is prohibited
Overtaking Sight Distance (OSD): If all the vehicle ply on the road at the design is speed, then theoretically there would be no need for