Wikipedia: "The Combino is a low floor tram produced by Siemens Transportation Systems (formerly DUEWAG). The first prototype was produced in 1996 at the Duewag works in Düsseldorf; the trams are currently made in Krefeld-Uerdingen. Because of its modular design using standardised components, and the resulting reduced costs, the Combino was for a time one of the most successful tram types. They were sold to twelve jurisdictions and a further development was sold to two others. In 2007, a new generation of Combinos was sold to Berne. The Combino line is expected to be superseded by Siemens new line of trams called Avenio, which have been built on the design technology of Combino Plus in Sul de Tejo and Budapest."