EMD GP60

An EMD GP60 is a 4-axle diesel-electric locomotive built by General Motors Electro-Motive Division between 1985 and 1994. The GP60 was EMD's first diesel that was classified as a third-generation locomotive. Hidden behind the electrical cabinet doors on the rear wall of the cab, the GP60 concealed a trio of microprocessors that monitored and managed a host of engine, cooling system and control functions. A hallmark of the 60 series and the defining detail of third-generation locomotives, on-board microprocessors replaced hundreds of wiring circuits, dozens of relays and all but one module card in what many observers consider to be one of the most significant technological advances since the dawn of dieseldom.

Power was provided by a 16-cylinder 710G3A diesel engine, which could produce 3,800 horsepower (2,800 kW). This locomotive was 59 feet 9 inches long and featured a 3,700-US-gallon (14,000 L) fuel tank. The GP60 series shared the same frame as the GP59. Cabless units of this locomotive model were also built; they were known as GP60B models, purchased exclusively by the Atchison, Topeka and Santa Fe Railway. Units built with a comfort/safety cab and a wide nose were designated GP60M and all purchased by the Santa Fe. A total of 294 GP60, 23 GP60B and 63 GP60M units were built by EMD. Due to the mainstream focus of railroads on big powerful six-axle units, the GP60 will most likely be the last new EMD "Geep".