Hierarchy classification:

1. top of the aat hierarchies
2. Objects Facet
3. Built Environment (hierarchy name)
4. Open Spaces and Site Elements (hierarchy name )
5. open spaces
6. [open spaces by function]
7. transportation spaces
8. roads
9. [roads by form]
10. streets
11. [streets by location or context]
12. main streets

Anotations

Scope note:

Designates the north-south streets used in laying out ancient Roman countryside tracts and associated towns and thus, by extension, the main north-south streets, distinguished by greater width and scale of appointments, of planned Roman towns.