"Road tends to be more cost efficient faster and flexible for less than train load lots. The road transport system has the advantage of being a user pays system where the Government and Insurance companies can adjust fuel, vehicle and road user excise taxes and insurance fees to recover the full internal and external costs of road transport. "
Rail and road are very similar in cost for containers, with rail having major benefits such as the ability to pick n drop and not struggling with the availability of trained drivers to the same degree as road..
I doubt that the Irish government recovers full costs of the road network, especially not after taking into account the huge capital expenditures of the past fifteen years.. They are subsidising some toll roads as it is..
"Another big pro in favour of road transport in Ireland is that you can load a truck with butter or cheese at a Co-Op in Cork or Kerry and deliver direct to a supermarket in the UK or main land Europe."
This is not an issue with the use of reefer containers, some of the kerrygold going to Europe travels by sea by this method only delivery would be to a distribution centre rather than an individual supermarket
"Road vehicle technology is also jumping ahead of rail, with larger more fuel efficient vehicles (HPMV) and GPS based fleet management systems improving roads competitive advantage over rail.
https://www.nzta.govt.nz/vehicles/vehicle-types/vehicle-classes-and-standards/vehicle-dimensions-and-mass/high-productivity-motor-vehicles/"
Nice in mainland Europe but not a whole lot of use in the West of Ireland where the roads struggle to handle existing trucks and the drivers know their routes..