EMD GP33ECO | |||||||||||||||||||||||||||||||||||
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![]() EMD GP33ECO Norfolk Southern 4722 powers a freight train, with a RP-M4C at the lead. This unit was later renumbered to 6722. | |||||||||||||||||||||||||||||||||||
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[2] |
The EMD GP33ECO is a 4-axle diesel-electric locomotive built by the Norfolk Southern Railway in its Juniata Locomotive Shop. The locomotive is a rebuild of the EMD GP50 designed to meet Tier 3 emissions standards. The first locomotive was completed in January 2015. The rebuild was funded in part by the federal Congestion Mitigation and Air Quality Improvement Program. [3]