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.

Published 19 July 2018
Last updated 5 March 2020 — see all updates

• From: 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, 371KB)

CGN0402: Average delay on the Strategic Road Network in England: monthly (ODS, 381KB)

CGN0403: Reliability of travel times on the Strategic Road Network in England: monthly (ODS, 7.95KB)

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

CGN0501: Average speed on local ‘A’ roads: monthly and annual averages (ODS, 142KB)

CGN0502: Average delay on local ‘A’ roads: monthly and annual averages (ODS, 153KB)

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 5 March 2020 + show all updates

1. 5 March 2020

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

2. 19 September 2019

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

3. 13 June 2019

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

4. 28 February 2019

   All data tables updated for the 2018 travel times report.

5. 13 December 2018

   Data tables updated for the year ending September 2018 report.

6. 20 September 2018

   Data tables updated for the year ending June 2018.

7. 19 July 2018

   First published.