Some of the original 2017 estimates for local ‘A’ roads have been revised. The main impact is to the local ‘A’ road morning peak figures for January and February 2017. Estimates for the Strategic Road Network are unaffected. Please see our February publication for updated figures and further details.
This page provides travel time measures for the Strategic Road Network (motorways and ‘A’ roads managed by Highways England) and for locally managed ‘A’ roads in England. For each, there is a measure of speed and delay, with an additional measure of reliability for the Strategic Road Network.
All supporting statistical tables are updated on a quarterly basis. For local ‘A’ road statistics, we provide statistics by region and local highway authority which are updated on an annual basis (in February).
Historically, we published separate statistical reports for travel time measures on the Strategic Road Network and locally managed ‘A’ roads. These were produced on a quarterly basis (in February, May, August and November). Following user feedback we decided to combine the statistical releases, with the first combined release published for the second quarter of data for 2017. From February 2018 onwards we no longer intend to publish quarterly travel time statistical reports. Instead, we will publish an annual report (in February), although we will continue to update the supporting tables on a quarterly basis.
These statistics used to monitor road congestion and journey time reliability are compiled from journey time data from in-vehicle global positioning systems (GPS) and flows estimated using automatic traffic counters and the department’s manual traffic count data.
The road congestion and travel times statistics guidance contains a brief introduction into these statistics, including what they measure, how they are published and how they are used. The guidance also includes technical information relating to the reliability of journeys on the Highways England’s network and on locally managed ‘A’ roads, plus information on public attitudes and research and development.