Statistical data set

Average speed, delay and reliability of travel times (CGN)

Data on the average speed, delay and reliability of travel times on the Strategic Road Network (SRN) and local 'A' roads, produced by Department for Transport.

Average speed, delay and reliability of travel times on SRN (CGN04)

CGN0401: Average speed on the Strategic Road Network in England: monthly (ODS, 373KB)

CGN0402: Average delay on the Strategic Road Network in England: monthly (ODS, 387KB)

CGN0403: Reliability of travel times on the Strategic Road Network in England: monthly (ODS, 8.41KB)

Average speed and delay on local ‘A’ roads (CGN05)

CGN0501: Average speed on local ‘A’ roads: monthly and annual averages (ODS, 143KB)

CGN0502: Average delay on local ‘A’ roads: monthly and annual averages (ODS, 154KB)

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Road congestion and travel times

Published 19 July 2018
Last updated 16 September 2020 + show all updates
  1. Data tables updated for year ending June 2020 statistics report.

  2. Data tables updated for year ending March 2020 statistics release.

  3. All data tables updated for the 2019 travel time measures report.

  4. Updated tables for 'Travel time measures for the Strategic Road Network and local ‘A’ roads: July 2018 to June 2019'.

  5. Data tables updated for the April 2018 to March 2019 statistics release.

  6. All data tables updated for the 2018 travel times report.

  7. Data tables updated for the year ending September 2018 report.

  8. Data tables updated for the year ending June 2018.

  9. First published.