A spline of asphalt, rolled flat and trimmed to 4m wide. It will try to follow ground contours, but best results will be obtained on flat ground.
LOD on the 5m-long repeat unit is 6 triangles to 250m, 2 triangles to 1000m, culled beyond 1000m. 1 texture material per mesh. Made in 3DS Max 2009 for Railhead001.