They also want to construct a new Spencer Dock Station and remodel Connolly Station.
More information has been lodged to try and secure planning permission to extend the DART.
Irish Rail has applied to extend the line from the city centre out to Parkway Station in Meath and Maynooth in Kildare.
They also want to construct a new Spencer Dock Station and remodel Connolly Station.

Uisce Eireann Says No New Connection Works at Ryevale House, Leixlip
Local Authority Tenants Must Get Permission Before Installing Video Doorbells, Says Kildare Council
Nearly €400,000 Owed On Derelict Buildings In Kildare-Newbridge District Alone
After Fertility Loss, Care Barriers Remain For Women With Endometriosis, Says Local Woman
Over €200,000 Awarded To The Conservation Of Three Historic Buildings In Kildare
€8.5m Wastewater Upgrade To Enable 900 New Homes In Celbridge, With Traffic Disruption Until May
Four New Bus Shelters Approved For Athgarvan And Maddenstown, Pending NTA Delivery
Two Men Arrested In Garda Operation Targeting Burglaries