EMD LWT12
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The EMD LWT12 was a rather experimental diesel locomotive built by General Motors Electro-Motive Division (EMD) between 1956 and 1958, and designed to pull light high-speed passenger trains. Power was provided by an EMD 567C 12-cylinder engine which generated 1200 horsepower (890 kW).
The LWT12 was essentially an EMD SW1200, a switcher engine, suitably geared for the high-speed service and wrapped in a strikingly impressive aerodynamic shell.
Only three LWT12 units were actually built. First one, EMD serial number 20826, entered service in Rock Island Line to pull the Talgo Jet Rocket train between Chicago and Peoria. Second and third units, EMD serial numbers 21463 and 21464, became integrated in the Aerotrain.