Hierarchy classification:

1. top of the aat hierarchies
2. Objects Facet
3. Furnishings and Equipment (hierarchy name)
4. Transportation Vehicles (hierarchy name)
5. vehicles (transportation)
6. land vehicles
7. [land vehicles by form]
8. [drags, litters and pedestrian land vehicles]

Anotations

Scope note:

A variety of conveyances for one person consisting generally of canvas or similar material stretched or laid across a frame for transporting the sick, wounded, or dead. For more elaborate conveyances carried on poles by people or animals, use "litters" if boxlike in form, often enclosed by curtains, or "sedan chairs" if in the form of portable chairs.