High Quality Content by WIKIPEDIA articles! Variotram (German Variobahn) is a German-designed articulated low-floor tram model. Since its introduction in 1993, the Variotram has been manufactured variously by ABB, Adtranz, Bombardier Transportation, and since 2001 by Stadler Rail. As of 2009, 254 trams have been ordered, with an additional 110 on option. A unit costs about €2.5 million.