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The New Zealand DX class locomotive[nb 1] is a type of 49 Co-Co diesel-electric locomotives that currently operate on New Zealand's national railway network. All locomotives are owned by KiwiRail.
Built by GE Transportation in Erie, Pennsylvania, United States,[5] they were introduced to New Zealand between 1972 and 1976.[1] The class is based on the General Electric U26C model,[1] a narrow-gauge version of the GE U23C model. The locomotives are regarded as one of the most successful purchases in NZR's history.[6]
The locomotives have seen several upgrades since their introduction and three sub-classes now exist: the DXB, DXC and DXR.
- ^ a b c McClare 1980, p. 24.
- ^ KiwiRail 2011, p. 21.
- ^ Parsons 2002, p. 21.
- ^ "Railfan". New Zealand Railfan. 26 (1). Triple M Publications. Summer 2020. ISSN 1173-2229.
- ^ Sinclair 1992, p. 9.
- ^ Bond 2021, p. 6.
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