New South Wales M set
class of electric multiple unit operating in Sydney, New South Wales, Australia
The M sets, also referred to as the Millennium trains, are a class of double-decker electric multiple units (EMU) that operate on the Sydney Trains network in New South Wales, Australia. Built by EDi Rail between 2002 and 2005, the first sets initially entered service under the CityRail brand on 1 July 2002 after short delays due to electrical defects. The M sets were built as "fourth generation" trains for Sydney's suburban rail fleet, replacing the ageing 1960s Tulloch double deck carriages and providing extra capacity on the suburban rail network. The sets currently operate on the T2 Leppington & Inner West, T3 Liverpool & Inner West, T5 Cumberland, T6 Lidcombe & Bankstown, T7 Olympic Park and T8 Airport & South lines.
Design
The Millennium train, just like the entire Sydney Trains fleet, is a double decker. It is a four car consist, with the middle two cars being non-control motor cars and the two outer cars being driving control trailer cars fitted with the pantograph. The Millennium train was the first to be equipped with an AC drive system unlike the Tangara, which has a DC drive system. The sets usually operate in eight-car formations with two four-car sets combined. While the Millennium train concept is an evolution of the Tangara concept (manufactured by A Goninan & Co), the Millennium train introduced new features such as internal electronic destination indicators, automated digital voice announcements for upcoming stops, a return to reversible seating, surveillance cameras, wider stairways, a new safety yellow colour scheme, and push-button opened internal doors. The Millennium Train also introduced crumple zones to absorb impact in a collision.
Begin with the source’s own compact description: “New South Wales M set” is class of electric multiple unit operating in Sydney, New South Wales, Australia. The dossier treats that line as a proposition to test through South, Wales and class, not as a finished interpretation.
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The citation trail is more important than the brevity of the summary: it shows where individual claims can be examined in context. The source revision retrieved here is dated Aug 28, 2026. The linked authority identifier is Q5122985. None of the 0 selected statements returned an explicit reference. The first chronological checks are 2002 and 2005.
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This entry incorporates text from “New South Wales M set” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.