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