DfT Road Traffic Statistics API

DfT Road Traffic Statistics API

The UK Department for Transport's road traffic statistics site publishes annual traffic estimates for Great Britain (annual average daily flows by vehicle type at count points, plus regional and local-authority totals) via a keyless JSON API and CSV downloads.

Coverage

The about page says: "This website presents the annual estimates of traffic on Great Britain’s roads." The downloads page says: "Data at the count point level is available in zipped CSV format covering years 2000 to 2025." and "Data at the regional level is available covering years 1993 to 2025." The about page states the publication date of the current data and when the next annual update is planned.

Verdict

Keyless JSON API and CSV downloads for DfT annual road traffic estimates in Great Britain. Licensed OGL-UK-3.0: the site footer says: "All content is available under the Open Government Licence v3.0, except where otherwise stated" Caveat from DfT: "DfT’s traffic estimates for individual road links and small areas are less robust, as they are not always based on up-to-date counts made at these locations." Rate limits: Not stated. Signal Lab links only.