This is a fully animated set of escalators. The direction of the animation can be set to go forward or reverse
Even the handrails are animated using a scrolling texture and match the speed of the step movement.
There are 4 different escalators that are suitable for different sized floor heights.
The triangle/vert counts are: 
LOD0: 7,966 triangles /  7658 vertices 
LOD1: 4,936 triangles /  6724 vertices 
LOD2: 2,644 triangles /  4476 vertices 
LOD3: 605 triangles /  1217 vertices 
The materials are all PBR configured and each model has a set of albedo / normal / specular / gloss texture maps
Texture sizes vary from 4096x4096 to 2048x512.