It was announced during the Innotrans railway fair in Berlin in September 2008: new leasing company Railpool awarded Bombardier with an order for 58 TRAXX locomotives, worth approximately 192 million euros (276 million US dollars). The agreement includes an option for a further 80 locomotives.
Of the initial order, 30 units will be built as AC2 electrics, homologated for Germany, Austria and Hungary. The first unit, the designated 185 671, was outshopped in May 2009, and than had to go to Hungary for the implementation and testing of its Hungarian signalling systems.
Official delivery of the first unit was announced for August 2009, but already in May 2009 Railpool was able to hand over the first to fully approved machines to operator EVB in Germany. This was made possible by Bombardier, as they took the fully tested 185 610 and 611, originally to be delivered to Angel Trains Cargo, out of their batch, and repainted and renumbered them as Railpool engines; 185 672 and 673.