Norfolk Southern GP33ECO
The NS 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. Norfolk Southern plans to convert a total of 25 GP50s. The first locomotive was completed in January 2015. The rebuild was funded in part by the federal Congestion Mitigation and Air Quality Improvement Program.
NS GP33ECO 4722 powers a freight train, with a RP-M4C at the lead
- "Juniata Diesel Conversions GP50 to GP33ECO for Norfolk Southern". AltoonaWorks. Archived from the original on February 1, 2015. Retrieved February 1, 2015.
- Guss, Chris (May 8, 2014). "EXCLUSIVE: Norfolk Southern begins GP33ECO locomotive program". Trains. Retrieved January 12, 2015. (subscription required)
- "NS unveils first publicly funded GP33ECO locomotives". Trains. January 6, 2015. Retrieved January 12, 2015. (subscription required)
- Guss, Chris (March 2016). "Green is the new black". Trains. 76 (3).