The Rhein-Sieg-Eisenbahn or RSE is a German company founded by the Verkehrsclub Deutschland (Transport Club of Germany) and interested private individuals with the primary purpose of saving a threatened industrial line, the Beuel–Großenbusch railway.

For example, (as at: September 2005) it serves the goods facilities at Bonn-Beuel, Siegburg Siegwerk, Sindorf (in the town of Kerpen) and Wiehl (all in NRW), which are integrated into the national and international rail freight transport network.

Under the internet address www.railport-bonn.de werden the logistic services provided by this, the only goods station in the Bonn region, are outlined.

In autumn 2008 all participants (the towns of Hemer and Menden, DB Netz and the railway area development company) were in favour of reinstating passenger rail services.

[9][10] On 1 November 2008 the RSE was given a 5-year licence to operate services after it had taken over the section of line from Kall to Schleiden-Oberhausen, the so-called Oleftalbahn.