The capacity of the new Dart+ West would be approximately 13,200 passengers an hour.
A new railway depot is planned near Maynooth to house additional Dart trains,it's part of the Dart+ West expansion.
A planning application for the Dart+ West expansion is set to be formally submitted later this summer, when the consultation period for the project ends.
The proposal for Dart+ West, would see infrastructure improvements to Connolly Station and Dublin’s Docklands alongside improved rail links to Maynooth.
Iarnród Éireann estimates that the capacity of Dart+ West would be approximately 13,200 passengers an hour, with 12 trains an hour compared to the six an hour currently.
The plan will see the modernisation of railways between Maynooth and Connolly stations, including track works like removing level crossings and electrifying the railway.
The overall Dart+ project would see the rail lines to both Hazelhatch and Drogheda electrified to allow the Dart to run to both.
The final budget and delivery schedule for Dart+ West is not yet known, but it's estimated to cost in around €1 billion.

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