An Coimisiún Pleanála has approved the extension of the Luas network in north Dublin.
The project will involve the construction of tracks between the existing Green Line terminus at Broombridge and a new terminus at Charlestown in Finglas.
There will be four stops – St Helena’s, Finglas village, St Margaret’s Road and Charlestown – along the 3.9km route.
A park-and-ride facility will be provided at the St Margaret’s Road stop, close to the M50 and N2 roads.
When completed, the system will serve an estimated population of 56,000.
A morning rush hour journey time of around 30 minutes is anticipated between Charlestown and Trinity College. It currently takes about 44 minutes.
The Railway Order granted by the An Coimisiún Pleanála contains 12 conditions, mainly relating to environmental issues.
In its decision, the commission said that the “positive long-term impacts” of the project include the provision of faster and more reliable public transport services, improved pedestrian and cyclist safety and reduced traffic congestion.
Minister for Transport Darragh O’Brien said the approval of the scheme means that it can “progress towards procurement and construction”.
In a statement, he said: “This is a major milestone in expanding Dublin’s public transport network.
“Luas Finglas will offer thousands of Dubliners a fast, reliable, sustainable way to get around the city, helping to reduce traffic congestion and improve air quality.
“The additional cycle and pedestrian facilities involved in the project will offer even more sustainable and active transport options.
“By reducing journey times, the project will also support the development of housing and businesses along the route.”
Plans for the extension of the Luas system to Finglas were first announced by Transport Infrastructure Ireland and the National Transport Authority in 2020.