I remember reading about the unusual arrangements there. What's the situation today?
I'm not sure, but I have a vague memory of an unusual way of working at Sandhills during closure of the tunnel through Liverpool city centre. Inbound Ormskirk services would form the next Southport service, and any through passengers were told by the guard to stay on board (as it was p***ing it down!) while the unit reversed in the turnback siding. Not sure if this was strictly within the rules, but it did mean I'd covered some rare track! It was around the time of the fleet refurbishment, as the outbound journey was unrefurbished but the return (on which the guard did not allow passengers to remain on board during the reversal) was a refurbished unit. As it turned out, the ex-Southport unit formed a Kirkby service anyway rather than an Ormskirk.
Limerick Junction is a shell of its former self.
As posted above, until the mid-1970s every train calling at the station on the Dublin-Cork mainline had to reverse at least once.
At that point the two mainline platforms (physically all one long platform) were made into loops, and crossovers installed so that they could both be used as through platforms.
Limerick-Waterford trains continued use the bay platform at the southwest end of the station meaning that they had to run around the back of the station building, cross the level crossing and then stop and reverse into platform 4. Leaving they would pull forward, stop, and then reverse for over a mile around the back of the station again before heading off to Waterford.
The two platforms at the southern end of the station have now been demolished and a much needed expanded car park installed.
The former Limerick bay platform can now take two trains simultaneously, so both the Limerick and Waterford trains can use that, and there is only the one mainline platform in use for trains in either direction.
Limerick Junction-Waterford trains (and v.v.) still have to reverse at least once
to access the station.
The plan is to install a new platform on the down side of Dublin-Cork mainline in the next year to negate the need for down trains to cross over onto the up line, as it can cause unnecessary delays. This platform will only serve trains in the down (Dublin-Cork direction). Waterford trains will still use the bay on the up side.
Although nothing like the 1980s/1990s when in the afternoon you could have Intercity Dublin-Cork and Cork-Dublin services, the Cork-Dublin mail, Limerick-Rosslare and Limerick Junction-Limerick services all arriving and departing within minutes of each other, Limerick Junction can still be a brief hive of activity.
Between 0900 and 0945, there are Waterford-Limerick Junction, Tralee-Dublin, Limerick-Dublin, Limerick-Limerick Junction and Dublin-Cork trains all calling at the station, with two of those having to reverse.
Between 1800 and 1845, there are Waterford-Limerick Junction, Limerick-Limerick Junction, Dublin-Limerick, Cork-Dublin and Dublin-Cork trains all calling at the station, and a Dublin-Tralee train passing through on the mainline.
Then it returns to sleep again!