Following the October 1990 reunification of Germany, the DR's locomotives and railbuses were incorporated (and renumbered) on 1 January 1992 into the classification system of the West German Deutsche Bundesbahn (DB), originally issued on 1 January 1968, in preparation for the merger of the two German national railways that took place on 1 January 1994.
This renumbering was also described as the 'locomotive classification of the Deutsche Bahn' as a number of changes and additions to the DB's 1968 system were needed.
Franz Rittig, Manfred Weisbrod: Baureihe 232 – Die berühmte Ludmilla (= Eisenbahn Journal Extra.
Verlagsgruppe Bahn, Fürstenfeldbruck 2012, ISBN 978-3-89610-363-5 Klaus-Jürgen Halle: Die Großdiesellokomotive V 180 – Das Erfolgsmodell aus Babelsberg.
In: Die Deutsche Reichsbahn – 45 Jahre Eisenbahngeschichte in der DDR, Kapitel 5.2, Ausgabe 1 / 2012, Geramond-Verlag, Gilching