Irish Rail is urging people hoping to travel to see the Pope next month to book their seats now.
Demand for train seats is expected to be unprecedented, with gardai and traffic managers advising people to use public transport for their journeys to Dublin or Knock.
Irish Rail spokesman Barry Kenny says nobody will be allowed get on a train on Sunday, August 26th unless they have a ticket or a reservation, something that will also apply to the Sligo/Dublin line:
