Rhine-Ruhr Stadtbahn

The Rhine-Ruhr Stadtbahn (German: Stadtbahn Rhein-Ruhr) is an umbrella system of all of the Stadtbahn (light rail) lines included in the integrated public transport network of the Verkehrsverbund Rhein-Ruhr (VRR), which covers the Rhine-Ruhr metropolitan area in western Germany. It does not include the Cologne and Bonn Stadtbahn systems, which are integrated in the Verkehrsverbund Rhein-Sieg (VRS).