199. Deputy Michael Murphy asked the Minister for Transport the estimated total additional expenditure required to deliver a fully operational replacement train management system, including interim upgrades, consultancy, procurement and implementation costs; and whether the overall financial exposure has been assessed against the original approved project budget. [75190/26]

200. Deputy Michael Murphy asked the Minister for Transport whether the independent review commissioned into Irish Rail's train management system project has been completed; when its findings will be published; the recommendations that have been made concerning project governance, procurement and oversight; and the way in which these will inform decisions regarding any replacement system. [75189/26]

201. Deputy Michael Murphy asked the Minister for Transport the interim arrangements Irish Rail has put in place following the termination of the train management system contract; the expected operational lifespan of the existing systems; the associated maintenance and upgrade costs; and whether the Commission for Railway Regulation has assessed the adequacy of these arrangements. [75188/26]

203. Deputy Michael Murphy asked the Minister for Transport the assessment undertaken of the implications of the failure of Irish Rail's train management system project for the delivery of DART+, increased train frequencies, network capacity and other planned rail infrastructure investments; and whether any projects or operational improvements are expected to be delayed. [75187/26]

204. Deputy Michael Murphy asked the Minister for Transport whether Irish Rail intends to proceed with a replacement train management system using technology (details supplied); the procurement process proposed; whether competitive tendering will be undertaken; and the estimated capital cost and delivery timeframe. [75186/26]

205. Deputy Michael Murphy asked the Minister for Transport the current position regarding the proposed replacement of Irish Rail's train management system; whether a preferred technological solution has been identified; whether a revised business case has been prepared; and when a final decision on the replacement project is expected. [75185/26]

I propose to take Questions Nos. 199, 200, 201, 203, 204 and 205 together.

Under the Dublin Transport Authority Act 2008, the National Transport Authority (NTA) has statutory responsibility for the planning and development of public transport infrastructure in the Greater Dublin Area (GDA), including the National Train Control Centre and associated railway traffic management system. The NTA also manages the wider portfolio of public transport investment nationally.

Noting the NTA's responsibility in this matter, I have referred the Deputy's questions to the NTA for a direct, detailed reply. Please contact my private office if you do not receive a reply within 10 days.