The orange door moves in two directions:
- Longitudinal: along the gray runway.
- Traversal: along the jade and green runways.
Yellow rollers bear the door weight.
Orange rollers guide the door.
Violet plates are the limit stoppers.
Green plates keep the jade runways immobile when the door is in the closed position.
Related video (from minute 0:18):
   • Ulu Pandan Bus Carnival - SMC & MASAT...  

Inventor files of this video:
https://www.mediafire.com/file/9wkt4u...