DescriptionEMD GP-38 locomotive with USEPA Tier 4 modifications by Union Pacific Railroad.jpg
English: Union Pacific Railroad locomotive # 1000 was a half-century-old EMD GP-38 extensively modified in railroad shops to reduce exhaust pollutants to meet USEPA tier 4 air quality requirements for switching service.
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Captions
Union Pacific Railroad locomotive # 1000 at Roseville, California.