Analysis Of Geometric Parameters for Increased Design Speed of Highway - A Case Study On NH-27

Roadway geometry design involves such as creating the road alignment and plotting the alignment profile using coordinates, stations, and elevations of points along the selected route, and designing the horizontal alignment, vertical alignment and superelevation. This study deals with the minimum standards for geometry that needs to be followed to achieve the minimum design speed of 140 Kmph. The various important factors related to Geometry of road are: – Horizontal Radius on Curves, Sight Distance on Horizontal and Vertical alignment, Superelevation, Vertical Curve length or radius, Maximum Gradient. The available Indian manuals and standards related to the Geometric design for highways is limited to the design speed of 120 Kmph. The author thinks about the setting of the base standards for the Geometric design of Highways for high-speed corridors.