In 2000 the eurobahn went into operation in the East Westphalia-Lippe region as the first private railway in the local rail passenger transport system, and in May 2000 it acquired the two lines RB 71 (Ravensberg railway) and RB 73 (Lipperländer railway). TALENT diesel railcars (manufactured by Bombardier) are in daily operation on this route and cover a distance of 0.9 million kilometres across the network every year. With outstanding commitment and friendly service, Keolis employees have achieved a steady increase in passenger numbers while continuing to ensure a consistently high level of customer satisfaction.
Between 2003 and 2011, eurobahn operated 11 LINT diesel railcars (manufactured by Alstom) on the scenic routes of the Weser and Lammetal railways, transporting passengers across a distance of 1.4 million kilometres every year. During this period, eurobahn increased passenger numbers on the Lammetal railway by more than 100%.
Owing to the recognised high quality of its services, Keolis Germany succeeded in securing two other major competitive projects for eurobahn, and since December 2008 has been operating the Hellweg network, which at the time was the largest electrically powered railway network ever contracted to a private railway operator. For this network, Keolis Germany acquired FLIRT four-car electric multiple units (manufactured by Stadler), which cover 5.6 million kilometres across eastern Westphalia, Münsterland and the Ruhr every year.
Commissioning of the Maas-Rhine-Lippe network followed in December 2009. FLIRT electric multiple units (manufactured by Stadler) are also used on this network and cover 3.3 million kilometres every year – more than 10% of the total distance covered by local rail passenger trains in Germany's most populous state North Rhine-Westphalia. Both routes of the Maas-Rhine-Lippe network run from Hamm through the northern Ruhr area to Düsseldorf (RE 3) and through Bergisches Land and the Lower Rhine region to Venlo in the Netherlands (RE 13).
In December 2013, the OWL contract was extended to 2025 and the eurobahn network acquired two new lines RB 67 and RE 82. The through service on lines RB 67 and RB 71 offers passengers improved timetable reliability and punctuality on these lines. Modern diesel railcars will cover a distance of 2.2 million kilometres every year in the East Westphalia-Lippe region over a period of 12 years in total.