EMD TR1

The EMD TR1 was a four-axle (B-B) diesel-electric locomotive built by the Electro-Motive Division (EMD) of General Motors in 1941. It was specifically designed and built for the Electro-Motive Division's own internal testing and research purposes. Only one unit was ever produced, bearing the demonstrator number 567. The "TR" designation stood for "Test Railcar". It was powered by an early version of the EMD 567 diesel engine, the engine that would become ubiquitous in many subsequent EMD locomotives. The TR1 served as a crucial platform for testing and refining the 567 engine and associated locomotive components, contributing significantly to the development of future EMD locomotive designs. After its service as a testbed, it was eventually scrapped.