There are two parts to this tutorial, the first part deals with creating a 2D spline in Giants Editor and using the Spline CSV  Creator scripts to create a new spline aligned to the terrain with more cv's at a chosen set distance along it. Also created is a CSV (Comma Separated Variable  ) file for use in Blender 2.79 (Only)  to create a road mesh .i3d aligned to the map terrain. The following scripts are also used in this tutorial. Spline CSV  Creator Set Up Terrain Pai