This was a first step in the direction of the development of Erfurt's modern Stadtbahn network, and included some routes that were fully grade-separated from other traffic e.
In 2000, Combinos Siemens traincars were added to the fleet.
Tranvie di Sicilia SATS 1435 17,8 750 v GS 2015 1000 600 V GS 1899 1946 950 3000 V GS 1934 1960 Ferrovie Elettriche Abruzzesi 1000 600 V GS 1912 1952 1000 600 V GS 1912 1928 SA Tranvie di Reggio C SATRC 1445 600 V GS 1877 950 750 V GS 2006 1000 600 V GS 1912 1948 STES 1000 3,250 550 V GS 1908 1943 Unione Esercizi Elettrici UEE 1000 600 V GS 1922 1950 STET; STAT 1435 600 V GS 1909 1960 Società Tranvie di Terni STT 1435 600 V GS 1872 Gruppo Torinese Trasporti SpA GTT 1000 500 V GS 1919 1952 S.
As part of the Stadtbahn construction program, a network of six lines that run at 10-minute intervals was introduced.