Northern Line

MQT on 2006-07-12
Session date: 
July 12, 2006
Question By: 
Brian Coleman
GLA Conservatives
Asked Of: 
The Mayor


Can you provide figures for excess journey time for the Northern Line, in proportional percentage due to: A - Infraco action, B - London Underground action, and C - other /passenger action, for the two most recent periods (covering June and July 2006)?


Answer for Northern Line

Answer for Northern Line

Answered By: 
The Mayor

London Underground (LU) complies its performance statistics on a 4-week period rather than calendar months. The breakdown of excess journey time figures for the two most recent periods show that the total excess journey time of 6.50 minutes on the Northern line.

This is made up of 2 minutes due to station-related functions, for example, interchange and ticket purchase and 4.5 minutes due to train-related incidents. The train excess journey time is broken down as follows:

· 3.30 minutes - Small incidents (e.g. fluctuations in demand, variations in service regularity and on-train crowding)

· 1.00 minute - Infraco Infrastructure (includes derailment at Archway on 2nd June)

· 0.10 minute - LU-related (including staff absence and errors)

0.10 minute - Customer related (e.g. security alerts or customer illness)