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Built by Fiat Materfer in 1958 and revamped by Viberti-Seac in 1977 for single agent service, the 3179 engine is the first and only tram in the world characterized by the possibility of transforming itself into a stage, almost completely opening one side, which has been modified and made overturned in 2007. It was chosen from the tramways set aside in the Regina Margherita depot in early 2007 and from there it was transferred to the Gtt Central Workshop for the processing work. This modification was proposed and designed by the cultural association "I tranvieri e la città" ("The tram drivers and the city"), a group that brought together tram drivers dedicated to acting in their free time. This association dissolved in 2019 and the tram was taken by Atts.



- length: 13,805 mm
- width: 2,250 mm
- height: 3,225 mm
- floor height: 836 mm
- weight: 20,000 Kg
- maximum speed: 45 km/h
- minimum radius: 13,759.5 mm
- power supply: 550 Vdc
- bogie type: Fiat 2045
- engine type: CGE CV 1132 S
- continuous power: 4 x 26.5 kW
- hourly power: 4 x 33 kW
- starting: automatic with PCM
- service brake: electro-pneumatic
- emergency brake: electro-pneumatic plus electromagnetic pads
- parking brake: mechanical
- air-compressor: CGE - CP25 or W-DH 10
- bodywork: Fiat - Seac
- color: GTT orange (RAL 2000)
- number of doors: 2


- seats: 9
-operators seats: 1
- total capability: 10