Transport for LondonNetwork performance
Here are the latest reports on network performance statistics and a summary of the key factors affecting it for the last quarter.
- Measuring performance
- Factors affecting performance
- Customer satisfaction
- Defining the passenger journey
Measuring performance
We measure network performance by comparing the number of kilometres a route has done in the last quarter.
We compare this quarter to the same quarter from last year, rather than the last quarter of this year, because traffic conditions and other factors affecting bus service performance can vary depending on the time of year.
This makes it more possible to reveal any underlying trends.
Scheduled kilometres are often not met because journeys are cancelled or suspended due to:
- Staff availability
- Engineering problems or mechanical breakdown
- Traffic congestion
Factors affecting performance
Between 21 June and 12 September 2008, the proportion of kilometres lost due to staffing reasons was adversely affected by two one-day strikes at First and one at Metrobus.
The result, excluding these strikes, is estimated at 0.1 per cent compared with an actual of 0.4 per cent.
Losses due to traffic delays were unchanged compared with a year ago at 1.8 per cent.
The ongoing roadworks in the Tottenham Court Road station area, in particular a westbound closure of Oxford Street for three weeks, resulted in substantial delays for buses.
Roadworks in Highbury, Knightsbridge and Richmond also caused significant problems this quarter.
Mechanical losses remained unchanged compared with a year ago.
Quality of Service Indicators for high frequency routes were very similar to a year ago.
Punctuality of low frequency services improved compared to quarter two last year, as did the proportion of night buses running on time.
The use of Quality Incentive Contracts, combined with various initiatives to improve control of routes, has helped maintain the high levels of reliability currently being achieved despite increasing levels of congestion.
Reports on performance
The following reports summarise performance statistics (based on a variety of criteria):
- Annual performance summary (PDF 24KB)
- Latest quarter summary (PDF 56KB)
- Good and improved routes (PDF 42KB)
- Long-term trends (PDF 21KB)
Customer satisfaction
We ask a sample of passengers to give a score out of 100 on a wide range of bus service features, based on the journey they have just made.
This is done for each quarter and passengers are carefully selected to represent all bus passengers in London. The latest figures can be found in the latest quarter summary document.
Defining the passenger journey
This is defined as a ride on a single vehicle, because a bus trip from A to B may include more than one bus. Statistics include all London Buses' contracted services but exclude any non-scheduled kilometres, Airbus, London Service Permit routes, and other special services.
