From 2003 to 2005, DB Regio ordered several small batches of Traxx locomotives, together with new rakes of double deck coaches, in order to upgrade regional services in several German Bundeslander (states). At that time the first generation Traxx locomotive platform was the basis for all products, including those equipped with the so called passenger-service package. In total 32 machines were ordered for 4 different regions, together forming the DB 146.1 series. 14 more machines were ordered at that time, but these were finally delivered as Traxx 2 platform machines, the designated DB 146.2 series.

All machines are painted in the standard red DB livery, with large DB logos on both flanks. Next to the cabin door small logos, slogans or weapons of arms are applied referring to the specific region where the machine is assigned to.