National Transportation Planning and Research Centre Highway Design Engineer Interview Questions and Answers

Various software are used for highway design depending on the specific task and requirements.

• AutoCAD Civil 3D for 3D modeling and design

• Bentley MXROAD for geometric design and analysis

• MicroStation for drafting and design

• HEC-RAS for hydraulic analysis

• InRoads for road design and analysis

• OpenRoads Designer for 3D modeling and design

• AutoTURN for vehicle swept path analysis

Super elevation is the banking of a road or track on a curve to counteract centrifugal force.

• It is the slope provided to the road surface on a curve.

• It helps to counteract the centrifugal force acting on a vehicle.

• The outer edge of the curve is raised higher than the inner edge.

• It is measured in percentage or degree.

• It is designed based on the speed and radius of the curve.

• Higher super elevation is required for higher ...read more