The fleet of 14 Lint 41 (class 623) and 24 Lint 54 (class 622) trains have been procured by DB Regio for ZSPNV-Süd's South West Diesel Network which, with a term of 22.5 years, is one of the longest regional rail concessions in Germany.

The network covers six lines totaling 196km:

  • RB 69 Weinheim - Fürth (Odenwald)
  • RB 62 Worms - Hofheim - Biblis
  • RB 63 Worms - Hofheim - Lorsch - Bensheim
  • RB 35 Bingen - Alzey - Worms
  • RB 46 Frankenthal - Freinsheim - Grünstadt - Ramsen (-Eiswoog), and
  • RB 45 Neustadt-an-der-Weinstrasse - Bad Dürkheim - Grünstadt - Monsheim

The 42m-long Lint 41 seats 113 passengers while the 42m-long Lint 54 seats 162. The 140km/h DMUs meet TSI-PRM standards for passengers with reduced mobility and each train is equipped with an accessible toilet.

The new trains are being ordered as part of the Rheinland-Pfalz-Takt 2015 programme to improve rail services in the region and will replace 20-year old DB Regio class 628 DMUs currently used on these lines.