The Cumberland Line (numbered T5, coloured magenta) is a commuter rail line operated by Sydney Trains in Sydney, New South Wales, Australia. It connects Schofields and Leppington stations in the western suburbs. Limited services extend from Schofields to Richmond. The line opened in 1996, following the construction of a 'Y-link' track between Harris Park and Merrylands stations. The intention of this link was to allow direct services to operate from the south west suburbs to Parramatta and Blacktown without requiring a change of trains at Granville. The line takes its name from the Cumberland Plain on which much of Western Sydney was built.