It is the centrepiece of the public transport system in Duisburg, a city in the federal state of North Rhine-Westphalia, Germany.

The system is operated by the Duisburger Verkehrsgesellschaft [de] (DVG), and integrated in the Verkehrsverbund Rhein-Ruhr (VRR).

It was planned to build a light railway system for the most important lines, which crosses the city centre from west to east.

This route was chosen, because it was the best way for the line from Mülheim an der Ruhr to Moers to run through Duisburg.

In 2000 the tunnel was extended to Meiderich Bf.. That time also some numbers and routes of lines were changed: 909 Media related to Stadtbahn Duisburg at Wikimedia Commons