The 2016 Rail Review recommends every train out of Kerry change at Mallow, thus dropping direct Kerry Dublin routes.
The review by the National Transport Authority says that any negative impact of this would be offset by increasing the number of Tralee – Mallow and Cork – Cobh trains, suggesting up as many as one an hour.
Half a million journeys were taken on the Tralee Dublin route last year.
In the report, Tralee is seen to be pulling its weight in terms of cost per passenger – it is losing money but at reasonable levels particularly when compared to the Limerick Ballybrophy and Gorey Wexford routes.
Tralee is seen as a strong regional centre, where tourism traffic does well on the line each summer.
The report also highlights safety concerns on the Tralee line with several instances of embankment slippages.
Ireland’s rail network is 150 years old.
Approximately 42 million passenger journeys will be completed on the network in 2016, which is returning to the levels achieved at the height of the boom in 2007.