When I did all the Luas / suburban lines in Dublin this summer the Clonsilla line was very quiet. I did Maynooth then M3 Parkway one after the other on a Tuesday mid-afternoon. Heading out from Dublin-Mayooth my train was about 10% full, with very few if any passengers joining or alighting anywhere apart from Drumcondra and Clonsilla, maybe 15 were left by Maynooth. Returning, about 20 were onboard from Maynooth, a couple joined at Clonsilla and I alighted at Navan Rd Parkway. During my 25 minutes there I saw not one soul. The car park out front was about 40% full, and the booking clerk had vanished into thin air. It was quite a strange experince being at a fairly large station in broad daylight and there being no sign of life at all. No-one boarded or left the train I got off of, similarly no-one boarded or left the train I joined. This was even quieter, maybe 5% full, a 3-car 29000 I recall. Everyone bar me and three others left at Clonsilla. Dunboyne was deserted, and myself and the three others left at M3 Parkway. I got the same train back and was the only one around until Clonsilla, when numbers picked up slightly because it was heading towards peak time now, and Dockalnds station. About 5 alighted with me at Docklands, and about 20 joined. I was the only one to alight at Broombridge (what a horrid stain on Dublin that station is!), and had 7 minutes to join the 6 passengers for the train to Connolly, on a train now about 90% full!
In brief - The cuts along the Clonsilla line don't surprise me, amazing how in three years M3P has gone from 2tph to Docklands to just 1tph to Clonsilla!