New South Wales D set
rolling stock used for New South Wales Intercity services
The D sets, also referred to as the Mariyung trains, are a class of double-decker electric multiple units (EMU) that operate on Sydney Trains intercity lines in New South Wales, Australia. Built by Hyundai Rotem, the trains currently operate on the Central Coast & Newcastle Line, Blue Mountains Line and the South Coast Line. The D sets replaced the former V set fleet, and will allow for the reallocation of the entire H set fleet to Sydney's suburban line services once all sets are introduced into service.
The first trains were delivered in December 2019. After a protracted dispute between the government and the drivers' union over their safety, they entered service on 3 December 2024 on the Central Coast & Newcastle Line. On 13 October 2025, the D sets also entered service on the Blue Mountains Line. On 14 April 2026, the D sets also entered service on the South Coast Line.
History
In May 2014, the Government of New South Wales announced its intention to purchase new carriages for the intercity network, then-operated by NSW TrainLink. The new trains would replace the V sets and allow the H sets to be cascaded to Sydney Trains suburban services. The class of trains were given the name Mariyung, a Dharug word for emu.
“New South Wales D set” enters the record as rolling stock used for New South Wales Intercity services. Crown Archives preserves that source wording while asking what South, Wales and rolling can confirm, complicate or overturn.
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