From March 2009, Veolia Transport will provide performance results on a line by line basis each month.
Train performance is measured as follows:
Punctuality measures the percentage of services arriving at their final destination within 4 minutes and 59 seconds of their scheduled arrival. This is usually referred to as "on time to 5 minutes" and is an international timekeeping standard.
Service Delivery measures the percentage of scheduled services that arrive at their final destination.
A 12-month rolling average for punctuality and service delivery, and an analysis of significant events affecting performance will also be provided each month.
Of the 6314 services scheduled for June on the network, 99.0% arrived at their final destination and 84.5% were on time.
Total Network
Punctuality: 84.5% 12 month Rolling Average: 79.0%
Service Delivery: 99.0% 12 Month Rolling Average: 98.0%
Western line
Punctuality: 83.2% 12 Month Rolling Average: 71.3%
Service Delivery: 98.5% 12 Month Rolling Average: 96.8%
Eastern line
Punctuality: 81.3% 12 Month Rolling Average: 80.7%
Service Delivery: 99.2% 12 Month Rolling Average: 98.5%
Southern line
Punctuality: 89.4% 12 Month Rolling Average: 83.2%
Service Delivery: 99.3% 12 Month Rolling Average: 98.4%
Analysis for June 2010:
Veolia Transport endeavours to deliver all services as published in the timetable however; weather, special events, train faults and breakdowns, track and signalling failures, staff issues and operational issues may also affect performance.
Work upgrading the platforms on the Western lines resulted in protection measures being put into place for the safety of staff employed during these work periods. These protection measures caused some consequential impact on services run times.
Cancellations during the month can be summarised as:
Significant events affecting performance in June were as follows: