The single-lane dirt road is made using seamless displacement material. Wet muddy track with a little snow and dry grass.

The material is applied to any plane (road) with a width of about 3 meters and corresponding UV with a tile size of 2 * 8 meters.
faces: 512
High resolution seamless textures:
Diffuse color-2048 * 16384px
NormalMap (input gamma 1.0); SpecularMap Ambient Occlusion DisplacementMap (openEXR 32-bit height ~ 10cm) -1024 * 8192px
Vray 3.1 or later Corona 2.0 or later.