Sydney commuters have been left stranded for the second time this week after rail maintenance on the North Shore saw major delays.

A lack of replacement buses on the T1 line left commuters waiting in long lines.

It comes as many returned to work or headed to the fourth and final Test between Australia and India at the SCG.

Transport Minister Andrew Constance says despite planning, unexpected numbers weren’t accounted for.

@T1SydneyTrains why is there trackwork on a workday? Why are there so few replacement buses? (I’ve been at Turramurra and only two – full – buses came by) the queue for a bus is 200m long! Very poorly planned! #sydneytrains #cityrail pic.twitter.com/BSTZsJdDEN

— Simon Stevens (@SajStevens) January 2, 2019

Hey @T1SydneyTrains the signs for no trains today would have been really helpful yesterday when there was time to plan (lots of us are back at work), also no sign at entrance to Lindfield station!! Happy new year you incompetent fools #sydneytrains #fail pic.twitter.com/DdZE7u5cyD

— Angela G (@ange475) January 2, 2019

Rail replacement bus during morning rush hour? Seriously? pic.twitter.com/1j4xDsfNsz

— Jono Yang (@jnoyang) January 2, 2019

Line is hundreds of metres long!!! pic.twitter.com/6sD7RSePKH

— Lauren Hosie (@HosieLauren) January 2, 2019

It’s the second time this week commuters have been left stranded, after wild weather on New Year’s Eve caused massive delays and cancellations across the network.

The minister tells Luke Grant he admits he “got it wrong”.

“We put in a 10 per cent contingency but it wasn’t enough.”

He says up to 200 buses will run across the line in a bid to avoid the same dilemma.

Click PLAY below to hear the full interview

Image: Twitter