The UK Department for Transport has published a new statistical item titled Quarterly traffic estimates (TRA25), dated 30 September 2026. The dataset is presented as provisional and covers road traffic broken down by vehicle type and by road class.
The document is published under the Department for Transport's statistical data sets and is identified by the TRA25 title. The Department describes the content as provisional figures for road traffic, organised to show differences by vehicle category and by the classification of roads.
What the TRA25 dataset contains
TRA25 is presented as a set of provisional traffic estimates that separate data by vehicle type and by road class. The dataset is structured to provide the user with traffic measures sorted along those two dimensions.
The material is explicitly labelled provisional, indicating that the figures should be treated as subject to later revision. The Department for Transport's presentation makes clear that the item on 30 September 2026 carries that provisional status.
Intended use and cautions
As a statistical dataset, TRA25 offers a breakdown of traffic by vehicle type and road class that can be consulted for analysis of vehicle flows and road-category comparisons. The dataset's provisional status is an important consideration for anyone using the figures for planning, modelling or reporting.
Users are advised to observe the provisional label and to check for any subsequent updates or revisions that the Department for Transport may publish. The dataset as released on 30 September 2026 is the most recent TRA25 item from the Department at that date.
The Department for Transport's publication is a formal statistical release and is intended to present organised, machine-readable or tabulated estimates rather than commentary or policy statements. The TRA25 entry supplies statistical measures of road traffic arranged by the two named dimensions: vehicle type and road class.
The dataset's format and labelling make clear how the Department presents these estimates; the provisional designation sits alongside the dataset title. That labelling serves as a signal to readers about the status of the numbers at the time of publication.
Readers who require detailed breakdowns should consult the TRA25 tables themselves for the exact categories used and for the specific figures. The Department's TRA25 item is the authoritative administrative source for these provisional estimates as published on 30 September 2026.
The Department for Transport will remain the publisher of record for any future revisions to the TRA25 dataset and for successive releases bearing the TRA25 identifier. Users working with the figures on or after 30 September 2026 should check whether later versions have been issued if they need finalised or revised counts.
In short, the TRA25 release of 30 September 2026 supplies provisional estimates of road traffic by vehicle type and road class as published by the UK Department for Transport. The provisional nature of the figures should be borne in mind when using the dataset for analysis or decision making.
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