Tango (Model Bochum)
Tango in St. Gallen
Manufacturer	Stadler Rail
Number under construction	2007–
Specifications
Train length	28,200 mm (92 ft 6+1⁄4 in)
Width	2,650 mm (8 ft 8+3⁄8 in)
Height	3,650 mm (11 ft 11+3⁄4 in)
Wheel diameter	740 mm (29.13 in)
Maximum speed	80 km/h (50 mph)
Weight	Empty: 35,740 kg (78,790 lb)
Traction motors	4
Power output	4 × 125 kW (168 hp)
Electric system(s)	750 V DC overhead wire
Current collector(s)	Pantograph
UIC classification	Bo′2′Bo′
Minimum turning radius	25 m (82.02 ft)
Track gauge	1,435 mm (4 ft 8+1⁄2 in) standard gauge 1,000 mm (3 ft 3+3⁄8 in) metre gauge

Tango (Model Basel)
Tango (Basel)
Manufacturer	Stadler Rail
Constructed	2008-
Specifications
Train length	45,000 mm (147 ft 7+5⁄8 in)
Width	2,300 mm (7 ft 6+1⁄2 in)
Height	3,510 mm (11 ft 6+1⁄4 in)
Wheel diameter	Driving: 680 mm (26.77 in) Carrying: 580 mm (22.83 in)
Maximum speed	80 km/h (50 mph)
Weight	Empty: 57.0 t (56.1 long tons; 62.8 short tons)
Traction motors	6
Power output	6 × 125 kW (168 hp)
Electric system(s)	600 V DC overhead wire
Current collector(s)	Pantograph
UIC classification	Bo′2′Bo′2′Bo′
Track gauge	1,000 mm (3 ft 3+3⁄8 in) metre gauge

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 Bochum, Berlin (BVG-Class IK), Basel, Geneva, Lyon, Aarhus and Sarajevo (NF3).

Characteristics

The cities operating Tango are demanding the following characteristics for their rolling stock: speed (up to 100 km/h or 62 mph), 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.^[1]

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.^[2]

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.^[3]

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.^[4][5]

Sarajevo Tramway has received 1 Stadler Tango NF3, and will receive 14 more by the beginning of 2024.^[6]