Stadler Tango

The Tango is a light rail vehicle and tram made by Stadler Rail. It can be built as either a 100% high-floor or 70% low-floor articulated unit. It is in use in Aarhus, Bochum, Berlin (BVG-Class IK), Basel, Geneva, Lyon, Ostrava (NF2) and Sarajevo (NF3).

Characteristics
The cities operating Tango are demanding the following characteristics for their rolling stock: speed (up to 100 km/h), robustness, security and compatibility with the common use of infrastructure, economic (capacity adapted to the traffic and prospects for their development) as well as comfort and aesthetics. In the case of the Appenzell Railways, the light rail needs to deal also with strong gradients in the foothills south of St. Gallen.

Usage
In Lyon, the Tango tram is serving the express line Rhônexpress linking downtown with Saint Exupéry Airport, and its TGV train station, opened in 2010. An order of 32 vehicles has been placed by the city of Geneva in December 2009. 20 were ordered by Stuttgarter Strassenbahnen, the first one being completed in September 2012.

Appenzeller Bahnen (AB) has contracted Stadler Rail to deliver seven new Tango for use on the new Appenzell–St. Gallen–Trogen railway starting from 2017. Previously, the western line from St. Gallen to Appenzell was operated by heavy rail with a rack section.

Aarhus Letbane will receive a mix of 12 Stadler Tango (with a top speed of 100 km/h) and 14 Stadler Variobahn, with a total of 26 units.

In 2016, Dopravní podnik Ostrava ordered 30 Stadler Tango NF2 (also known as nOVA) trams with an option for another 10 trams. All 40 trams were delivered between April 2018 and October 2019.

Sarajevo Tramway has received 1 Stadler Tango NF3, and will receive 14 more by the beginning of 2024.