ADtranz low floor tram

The ADtranz low floor tram was introduced in the 1990s as the world's first tram with a completely low floor design. It was developed by MAN for the Bremen urban transport system, and the prototype, tram number 3801, was first shown publicly on 9 February 1990, after which it was tested in many European cities from 1991 to 1993. Ten German cities bought the type. The models are named GTxN, GTxM, GTxS or GTxK from the German for articulated propelled railcar, with the number of axles and a letter for the gauge, so the standard gauge versions are the GT6N and GT8N and the metre gauge version is the GT6M. Trams come in three or four modules of about the same length, each with a bogie under it, and the layout follows curves with the first or last module dragging the others after it. Berlin took 150 GT6N cars delivered from 1994 to 2003, and a second generation sold only to Munich and Nuremberg. When Bombardier Transportation bought Adtranz it ceased production of the GTx trams, and the concept lived on in its Incentro.