The first three lines are operated under contract by Transdev Sydney,[3] while the L4 Westmead & Carlingford Line is operated by Great River City Light Rail, a joint venture between Transdev and CAF.
[3] The first section, ten stops between Central station and Wentworth Park via Darling Harbour and Pyrmont, opened on 11 August 1997.
[8][9] The second and third light rail lines opened as part of the CBD and South East Light Rail, which has nineteen stops in total and consists of two branches that combine within the CBD.
[11] On 20 December 2024, stage one of the Parramatta Light Rail opened under the name L4 Westmead & Carlingford Line.
[12][13] Stage two is expected to begin construction in 2025, with fourteen additional stops over 10 kilometres (6 mi) of track.