About 150 passengers were led through a Northern Line train this morning due a faulty track at Waterloo. The line is now suspended between Kennington and Charing Cross and you can expect delays to the rest of the serivce this morning too.
I wonder how this will add or aid its reliability targets? Although Tube Lines who run the Misery Line said that they hit their targets for the first quarter of this year despite recording delays on every single day.
"LU targets are set according customer hours lost, so a train delayed at Bank station at rush hour will weigh more heavily on Tube Lines' figures than a late night train to High Barnet," said Thisislocallondon. So delays appear to be relative.
Although, Tube Lines trumpeting about their reliability does lead one to think that delays are seen as a reliable part of the Northern Line service. Perhaps if you didn't get delayed on the Northern Line you might be worried that something was actually wrong with the line.