It is said the new carriages will enable additional services and extra capacity on Intercity and Commuter routes.
Irish Rail has taken delivery of the first three Intercity railcar carriages of an order of 41 from South Korea.
Made by manufacturers Hyundai Rotem, the three carriages arrived in Dublin Port on Wednesday (7 September).
Funded by the National Transport Authority (NTA) under the Government's National Development Plan, the carriages will enter service following commissioning from early next year.
According to Irish Rail, they will allow for additional services and extra capacity on both Intercity and Commuter routes.
This is as passenger demand continues to strengthen post-Covid, with Intercity demand in particular close to full recovery.
Irish Rail has said it and the NTA will undertake passenger public consultation as part of the process to confirm service enhancements.
It also stated that the additional 41 carriages will increase the Hyundai Rotem Intercity railcar fleet operating on the Irish Rail network from 234 carriages to 275 carriages.
This article originally appeared on Joe.ie.