MissAlison's "Places I've Lived"

I’m arranging data for everything Rome on 43Places, and your “tiburtina” entry puzzles me a bit… I was wondering:

a) What do you mean by “tiburtina”? Via Tiburtina, or the neighborhood Tiburtino? (I assume you didn’t mean “Stazione Tiburtina”) ;)

and

b) why would you consider it a different place from Rome?

Thank you!