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Union Pacific Railroad recently contracted National Railway Equipment Co. to build 60 low-emission diesel locomotives for use in the Class I’s Los Angeles Basin yards.

UP expects the “Generator-Set” switchers to reduce emissions up to 80 percent and reduce fuel consumption up to 40 percent compared with conventional locomotives.

The 2,100-horsepower locomotives will be powered by three 700-horsepower low-emissions U.S. Environmental Protection Agency Tier 3-certified diesel engines. UP will take delivery of 30 locomotives this year; the remainder will be delivered in 2007.

In 2002, UP began testing a Gen-Set switcher in the Long Beach and Los Angeles, Calif., areas.