Sydney train delays and shutdown of T3 line possible if NSW fails to reach agreement with transport union

The metro extension south from Sydenham could be derailed if the NSW government doesn’t reach a pay agreement with transport union. Photograph: Belad Al-Karkhey/AAP

Commuters can expect delays and a main Sydney train line’s conversion to a metro service will face “significant” disruption at the taxpayer’s expense unless the New South Wales government can reach an 11th-hour agreement with the rail union.

The Rail, Tram and Bus Union was yet to reach a breakthrough in emergency talks with Sydney and NSW Trains management on Thursday morning after beginning industrial action on Wednesday.