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Leighton Contractors will team with the Transport Infrastructure Development Corporation, Maunsell Australia, Sinclair Knight Merz, MVM Rail and Union Switch & Signal to deliver the duplication of rail lines between Kingsgrove and Revesby stations.
The additional tracks between Kingsgrove and Revesby will improve the reliability of the service by allowing a complete separation of slow and express services on the East Hills Line. Slow services will operate via the Airport and express services via Sydenham.