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.

• From: Department for Transport
• Published: 19 July 2018
• Last updated: 9 March 2023 — See all updates

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

CGN0404: Average speed on the Strategic Road Network in England: monthly and annual averages (ODS, 286 KB)

CGN0405: Average delay on the Strategic Road Network in England: monthly and annual averages (ODS, 324 KB)

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

CGN0503: Average speed on local ‘A’ roads in England: monthly and annual averages (ODS, 135 KB)

CGN0504: Average delay on local ‘A’ roads in England: monthly and annual averages (ODS, 145 KB)

Contact us

Road congestion and travel times

Email congestion.stats@dft.gov.uk

SRN and local 'A' roads travel time measures 020 7944 3095

Published 19 July 2018
Last updated 9 March 2023 + show all updates

1. 9 March 2023

   The tables have been updated to include data from January 2019 to December 2022

2. 14 December 2022

   Data tables updated for the travel time measures for SRN and local 'A' roads for October 2021 to September 2022.

3. 8 September 2022

   The tables have been updated to include data up to June 2022.

4. 29 June 2022

   Data tables updated for the travel time measures for SRN and local 'A' roads for April 2021 to March 2022.

5. 2 March 2022

   Data tables updated for the 2021 travel time measures report.

6. 14 December 2021

   New data tables created to reflect changes to the data provider.

7. 8 July 2021

   Data tables updated for April 2020 to March 2021 travel time measures report.

8. 25 February 2021

   Data tables updated for the 2020 travel time measures report.

9. 3 December 2020

   Data tables updated for year ending September 2020 statistics release.

10. 16 September 2020

    Data tables updated for year ending June 2020 statistics report.

11. 18 June 2020

    Data tables updated for year ending March 2020 statistics release.

12. 5 March 2020

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

13. 19 September 2019

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

14. 13 June 2019

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

15. 28 February 2019

    All data tables updated for the 2018 travel times report.

16. 13 December 2018

    Data tables updated for the year ending September 2018 report.

17. 20 September 2018

    Data tables updated for the year ending June 2018.

18. 19 July 2018

    First published.