This is a universal railway section switchable between EU/US/China (1435 mm) and RU/SU (1520 mm) rail road width standards via single bone in a rig.

Specifications:

Topology: quads only, fully subdividable.

Units: metric.

Dimensions:

Full bounding dimensions (L x W x H): 10 x 2.7 x 0.82 m.

Cross-tie width: 30 cm.

Distance between adjacent cross-ties (center-to-center): 1 m.

Materials: all procedural PBR, based on Principled shader, thus widely compatible with modern PBR renderers. No texture files (raster images) used.

Switching width standard is done via rotating (in Pose Mode) BoneWidthControl (found under Armature in objects hierarchy) around Z axis (rotation constraints are set for convenience).

All objects of the model are properly parented to each other and grouped into a single Collection.

UV maps unwrapped (yet never used since all textures are generated procedurally and based on Generated mapping coordinates).

HDRi environment map (Blue Grotto, public domain) packed in .blend for more realistic reflections, as well as put into supporting items separately.

All imagery is done via Cycles / Filmic, no post-processing.