The rail infrastructure expertise of Deutsche Bahn is concentrated under the umbrella of DB Netze Track. The DB Netze Track Business Unit consists of the companies DB Netz AG, DUSS GmbH, DB Fahrwegdienste GmbH and DB RegioNetz Infrastruktur GmbH.

DB Systel GmbH, headquartered in Frankfurt am Main, is a wholly owned subsidiary of DB AG and the digital partner for all Group companies.

As an independent Deutsche Bahn energy manager, DB Energie manages one of the largest mixed energy portfolios in Germany. It has a unique infrastructure for the supply of power and diesel fuel to mobile and stationary consumers.

The Services Business Unit covers six different sectors: DB Fahrzeuginstandhaltung (Vehicle Maintenance), DB Systel (ICT), DB Services, DB Fuhrpark (Motor Vehicle Fleet) as well as DB Kommunikationstechnik (Communications) and DB Sicherheit (Security).

DB Arriva plc - go to external website

The Long Distance Business Unit provides national and cross-border long-distance rail services and road transport.

DB Systemtechnik – provider of a comprehensive range of engineering services

DB Vertrieb GmbH is exclusively responsible for distribution and ticket sales for the passenger transport services of DB and many other transport operators. It connects rail services to some five and a half million passengers.

Deutsche Bahn Digital Ventures GmbH began its business activities on November 15, 2016. The company is a wholly owned subsidiary of Deutsche Bahn AG.

The DB Cargo Business Unit manages Deutsche Bahn's Europe-wide rail freight business. Its network comprises 16 subsidiaries in different countries.