Sydney’s train network is strained after a breakdown at Town Hall station prompted delays across the rail network.
A technical issue led to the closure of the North Shore line between the centrally-located Town Hall and North Sydney at around 5.20AM.
The T1 Western line, T2 Inner-west and Leppington line, T3 Bankstown, T8 Airport and T9 Northern line have also experienced flow-on delays.
T1 Sydney Trains took to Twitter to confirm crews had been working frantically to help clear the backlog.
Despite the best efforts of technicians, Sydney's commuters remain unimpressed by the added frustration on the Friday morning trip to work.
Replacement buses have been deployed to ease the commuter chaos however travellers are reporting significant queues to access the backup services.
Transport authorities maintain commuters should allow plenty of extra travel time to reach their destination.
The rail headaches are just the latest in a number of problems on Sydney's train network.
Metro passengers were left fuming on Tuesday when a mechanical problem disrupted services, bringing the much-hyped driverless vehicles to a halt for the third week in a row.
