Diesel locomotive 203 303 of DB Netz AG.

■ With grey grab irons and lamp rings
■ Primarily used as a construction locomotive and for hauling materials trains
■ In digital operation with switchable headlight/tail light and shunting light

DB Netz AG is the rail infrastructure company of Deutsche Bahn AG, responsible for managing the nearly 33,400-kilometre-long rail network, including all facilities necessary for railway operations. To support these tasks, the company operates its own fleet of locomotives and wagons.