Key Performance Indicators on the TFL Road Network: Disruption and Journey Times

Selected key performance indicators on the TFL Road Network track serious and severe traffic disruptions and journey time reliability. The dataset includes the total number of road works, which was capped at 3,250 for any one period from 2013/14 to 2014/15, a 13.4% reduction from the previous cap. It was published by the Greater London Authority but has been discontinued.

Use Cases

• Monitor journey time reliability based on the percentage of journeys completed within an allowable excess of 5 minutes for a standard 30 minute AM peak journey.
• Analyze serious and severe traffic disruption patterns based on hours of disruption by planned and unplanned status.
• Track road network maintenance activity based on the total number of works undertaken.
• Assess the impact of policy changes based on the reduction of the permissible total number of road works from 3,753 to 3,250.

Strengths

• Includes a specific policy metric: the maximum permissible total number of road works was capped at 3,250, a 13.4% reduction from a previous cap of 3,753.
• Provides clear operational definitions for key metrics like 'journey time reliability', 'serious congestion', and 'severe congestion'.
• Data is sourced from the authoritative Greater London Authority, responsible for the TFL Road Network.

Limitations

• The dataset has been discontinued, limiting its use for current analysis.
• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment.

Provenance

Source

Greater London Authority

Time Range

Covers at least the financial years 2011/12 to 2014/15, based on mentioned policy caps.

Freshness

Last updated 2026-06-24 21:06:00.307615; freshness should be verified as the dataset is discontinued.

Geography

London, specifically the Transport for London (TFL) Road Network.