Department For Transport
Our statistical practice is regulated by the Office for Statistics Regulation (OSR). OSR sets the standards of trustworthiness, quality and value in the Code of Practice for Statistics that all producers of official statistics should adhere to. You are welcome to contact us directly by emailing congestion statistics with any comments about how we meet these standards.
Revised Figures
On Thursday 3 October 2024, travel time statistics for the local A roads were revised. The revision stems from a change in the provision of data following discussions with our suppliers and is to ensure consistency of the dataset moving forwards. See the technical note for more information.
This adjustment results in minor changes to the figures, but it is important to note that these are minor and that revisions do not impact the overall trends observed.
Although all data previously published is valid, we recommend users who have previously downloaded or utilized the data to refer to the most recent dataset
On the Strategic Road Network (SRN) for the year ending March 2024, the average delay is estimated to be 10.6 seconds per vehicle per mile (spvpm), compared to free flow, an 11.6% increase on year ending March 2023.
The average speed is estimated to be 56.9 mph for the year ending March 2024, down 1.7% from March 2023.
On local A roads for the year ending March 2024, the average delay is estimated to be 47.3 seconds per vehicle per mile (spvpm) compared to free flow. This is up 3.1% on year ending March 2023.
The average speed is estimated to be 23.2 mph for the year ending March 2024, down 0.9% on year ending March 2023.
Contact us
Road congestion and travel times
Email congestion.stats@dft.gov.uk
Media enquiries 0300 7777 878
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