DR Class E 42The DR Class E 42 is a class of electric locomotives formerly operated by the Deutsche Reichsbahn in East Germany. They were later operated by Deutsche Bahn, designated as Class 142.Technical specificationsThe locomotives have a Bo-Bo axle arrangement and a power output of.HistoryA total of 292 locomotives were built. From 1970 onward, they were designated as Class 242. Some locomotives were acquired by Lokoop and hired out for services in Switzerland.