The Luas Cross City came under pressure to begin operating earlier than planned.
New documents obtained by the Sunday Business Post showed Transdev initially planned to begin operating in January.
The Luas Cross City launched on December 9th, however it's now been revealed that this was earlier than planned - and that the State pushed Transdev to open early.
Transport Infrastructure Ireland requested the service begin at the end of November and Transdev rejected this by saying it would increase technical and operational risks.
The latest emails, sent in September, released by the TII show that Transdev said that Luas Cross City would not be in a position to be opened for passenger service on 30 November.
However, the €368 million tram line was launched on time and on budget last December - but there has been traffic disruptions ever since.
Luas passengers have complained of overcrowding on trams while Dublin Bus have diverted dozens of routes away from College Green.