Not only busses, but also cable cars and trains of the South Tyrol Integrated Transportation can be used with the different tickets.
Image gallery: Public transport of the South Tyrol Integrated Transportation
The South Tyrol Integrated Transportation includes the municipal busses, urban busses and city busses, the regional trains of TrenItalia, the Val Venosta Train and the Val Pusteria Train, the Mendola funicular railway, the tramway and funicular on the Renon and also the cable cars San Genesio-Bolzano, Colle-Bolzano, Meltina-Vilpiano/Terlano, Verano-Postal and Maranza-Rio Pusteria. In addition, there's the Nightliner in several South Tyrolean areas, e.g. in the Sciliar area (Saturday evenings and New Year's Eve).
You can buy your ticket at any authorized ticket office as well as at automatic ticket machines in all railway stations and on board the busses. More information here. You have to stamp your ticket at the beginning of the trip at the ticket validators in the railway stations or on board the busses.
All information about time tables and route network of the South Tyrolean busses and trains as well as current tips about the public transport you can find on südtirolmobil.
Call Center Mobility
If you have questions about the local public transport in South Tyrol you can call +39 0471 220 880.