Siegstrecke
On the main line (the Sieg Railway from Cologne to Siegen), it is served by the Rhein-Sieg-Express, running from Aachen via Cologne and Betzdorf to Siegen (RE 9), along with the S-Bahn S 12 services from Köln-Ehrenfeld (Horrem in the peak) and on week days by S19 services from Düren. The RE9 and the S12 services operate hourly, but the S19 services are less frequent.