The idea was floated (though not very well) on the Glasnevin Junction thread.
That if you managed to pack everything going to/from the Clonsilla direction onto the Midland line, leaving the Drumcondra line abandoned, you could take a bunch of trains from Heuston Islandbridge into Connolly and the Docks. So you could for example take the key Intercity trains into Connolly and main Commuter services into Spencer Dock.
If the Sligo and Longford trains were rerouted to terminate South of Connolly, even more conflicts would be abolished as would demands on Connolly platform time, and the implementation of the DRP would eliminate virtually all running-service conflicts.
In summary, the theoretical capacity of the Junction is, in my veiw, something of an order several times what is currently being exploited - possibly up to 10x.
That could change at any time and yes, the RPA should be scared.
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