2019 Train performance
Looking at the IE homepage twitter feed there seems to be almost daily cancellations of scheduled DARTS (usually a North/Southbound plus the returning South/Northbound working). Invariably this is due to "operational reasons", which covers a multitude of possibilities. Crew shortages?
Looking at train performance data, there appears to have been a steady deterioration in punctuality month by month from January to March. Is the new timetable putting such demands on rolling stock that maintenance and reliability are slipping?