calling at Carrigtwohill. It had been proposed to eventually extend the line to Youghal with intermediate stops at Mogeely and Killeagh. Limerick The Limerick commuter rail network consists of three suburban rail lines which comprise the Limerick suburban network. Limerick Colbert - Ennis line calling at Sixmilebridge Limerick Colbert - Nenagh line calling at Castleconnell and Birdhill. (This is a skeleton service) Limerick Colbert - Limerick Junction (for Tipperary town) Galway The Galway commuter rail network consists of one suburban rail service which comprises the Galway suburban network. Galway Ceannt–Athenry calling at Oranmore Other Other services operate between Mallow and Tralee, and Manulla Junction and Ballina. In addition, some InterCity services operate using Commuter branded DMUs – these include Dublin–Sligo and Dublin–Rosslare Europort services. Rolling stock Commuter services are operated primarily using DMU "railcars,” with four separate classes operating on most routes: Current Fleet Former Fleet Operation All of the DMU types can operate either independently or can be attached to another set of their own class or of another class to form trains of up to ten cars. In addition to the DMUs, locomotive-hauled coaches supplemented services. The introduction of the 22000 Class units on InterCity services allowed the 2800 Class and 29000 Class units to be cascaded to Commuter services, which allowed the locomotive hauled stock to be fully phased out by 2009. Eventually, since all 63 22000 Class railcars were delivered in 2012, they operate all InterCity and some Commuter services in Dublin, excluding the Dublin-Cork route and the Dublin-Belfast route. Future Irish Rail is due to undertake a major expansion of its Commuter services from 2020. Rolling stock Over 600 new bi-mode and electric coaches are due to arrive starting from late 2023, as stated in the Invitation to Tender issued in May 2019. Infrastructure Under this plan, several commuter lines will be refurbished and re-opened - plans include: Reinstating a rail service to Navan which will connect with the Western Commuter Line into Dublin. Expanding the Cork suburban network with new stations between Cork and Mallow. Reopening the Western Rail Corridor between Limerick and Sligo in stages. Ennis to Athenry is complete. Feasibility studies have also been made into the possibility of creating airport links to several airports; a link to Ireland West Airport Knock is a long term aim of the Western Rail Corridor project while a feasibility study into a link to Shannon