UP Pioneers Genset Switcher Locomotive
Designed to reduce air pollution and fuel consumption, the Generator-Set switcher has had a significant impact on railroads and the environment. The Genset reduces emissions of particulate matter and oxides of nitrogen by 80 to 90 percent compared to older switcher locomotives. The switcher also uses more than 30 percent less fuel. Since 2002, when Union Pacific tested its first prototype, the railroad has put 165 of these locomotives in service — half of all the Gensets operating worldwide.