HL Deb 25 January 2000 vol 608 c192WA
Baroness Anelay of St. Johns

asked Her Majesty's Government:

How many occasions since 1 December 1999 the Jubilee Line service has been disrupted by signal failure. [HL518]

Lord Macdonald of Tradeston

This is an operational matter for LU. However, I understand from London Underground that between 1 December 1999 and 6 January 2000 there were a total of 26 incidents of delay attributable to failure of Jubilee Line signalling equipment. Of these, nine were of over 15 minutes duration and the rest between two and 15 minutes.

It is anticipated that the introduction of new systems on complex transport projects will entail the progressive elimination of technical problems. This work is in progress in particular on signalling, and should improve performance significantly over time.