The Mülheim an der Ruhr and Oberhausen trams have a system length of 36 kilometres. The line 112 leading to Oberhausen is operated jointly by
→ Ruhrbahn (Mülheim) and
→ STOAG (Stadtwerke Oberhausen). Since Oberhausen owns only 6 vehicles, the Oberhausen trams are maintained in the Mülheim Depot.