The "Evolution Series 4400HP DC Traction" locomotive is part of GE Transportation Systems line of diesel locomotives that were built to meet the EPAs 2005 Tier 2 locomotive emissions standards. All Evolution Series locomotives delivered to the North American market are six axle locomotives equipped with Nathan-Airchime K5HL-R2 "Evolution" airhorns.

The GE ES44AC is still in use today serving the entire nation through a variety of hauling tasks including traffic resulting from the Ethanol mandate. CSX has some 200 units on or coming onto its roster, while Iowa Interstate ordered 14 units. Norfolk Southern purchased 24 units, receiving the first of its allotment in 2008. This modern diesel comes equipped with the Paragon3 Sound and control system and will feature variable load-based smoke output.

Features:

• Paragon3 Sound & Operation System with Rolling Thunder with authentic sounds and prototypical operation in both DC and DCC environments
• Variable load based smoke output
• Locomotive composition: ABS body with die cast chassis
• Couplers: (2) Operating Kadee or compatible
• Compatible tracks: Code 83 and 100 rail
• Minimum operating radius: 18 in or greater