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. freewheeled vehicles
9. [freewheeled vehicles by form or function]
10. passenger vehicles
11. carriages (vehicles)
12. [carriages by form]
13. four-wheeled carriages

Anotations

Scope note:

Refers to cut-down versions of landaus seating two passengers facing forward and covered by a folding hood, and, by extension, for automobiles having a convertible top over the back seat, the front seat being either roofed or open.