General rule is 3 minutes plus 1 extra per coach, if you want it reliable which is the key requirement
Its also technically single P7 to just before Croke Park so when a train clears for Maynooth it will be 6 minutes before the next one can come in from the Midland line since it has to wait just west of Croke Park until the outbound train clears the Newcommen Junction
Limit on the Maynooth line is 8tph level crossings etc. Our little timetable can hack that by adding 2 trains to Docklands, of course it would have allowed for 3 trains from Kildare an hour as well if Docklands was built correctly
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