Irish National Transport Authority has launched the Integrated Implementation Plan 2013-2018 to develop transportation in the Greater Dublin Area.
It provides the framework for a capital and operational investment of around €900m in the region over the next four years.
Of the total investment, around €285.5m will be used for light rail and €136.8m will be used for heavy rail projects, while the remaining will be used for bus and sustainable transportation.
Irish Transport, Tourism and Sport Minister Leo Varadkar said: "As the economy picks up again and traffic levels rise, it’s vital that we continue to invest in public transport to keep Dublin and the surrounding counties moving.
"This important plan shows how the government will improve public transport through targeted investment, and by making better use of existing infrastructure. The plan shows that there is a lot that we can do, even when resources remain limited."
The plan includes the reopening of the Phoenix Park Tunnel link and the 5.6km Luas Cross City line, which work is currently underway on.
Expected to start commercial services at the end of 2017, the 13-station Luas Cross City line will run north from the existing Green Line terminus at St Stephen’s Green, crossing the Red Line at the junction of O’Connell Street Upper and Abbey Street.
The line will also serve the new Dublin Institute of Technology campus at Grangegorman before terminating at an interchange with Irish Rail’s Broombridge station.
The light rail projects under the plan include fleet and network improvements, while the heavy rail projects include resignalling to facilitate more train trips through the central rail bottleneck at peak periods.
Image: Luas tram stop at Abbey Street. Photo: courtesy of William Murphy.