Local authority Dorset

Region: South West
Count points: 221
Time period: 2000 to 2019
Source: Road traffic statistics

2.60 billion vehicle miles were travelled on roads in Dorset in 2019.

Traffic estimates for the period since 2010 have been revised to take into account the minor road benchmarking exercise. Further details available on GOV.UK: Road traffic statistics: minor road benchmarking


Download data

Data disclaimer

Traffic figures at the regional and national level are robust, and are reported as National Statistics. However, 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. Where other more up-to-date sources of traffic data are available (e.g. from local highways authorities), this may provide a more accurate estimate of traffic at these locations.

It is the responsibility of the user to decide which data are most appropriate for their purpose, and if DfT road link level traffic estimates are used, to make a note of the limitations in any published material.

Quality flags in data downloads

DfT’s road link level traffic estimates are calculated using a variety of methods, with some methods likely to produce more accurate estimates than others.

The data tables available to download here contain a column - estimation_method – showing the method used to estimate traffic for each location and year. Figures having an estimation method of “Counted” are likely to be more accurate than those marked as “Estimated”, and the latter should be used with caution.


Update on 30 November 2020: The files available to download from this website have been updated to correct for missing and/or duplicate entries. This only affected the download files, and not the summary statistics and other data presented on the website. For further information see the About webpage.

Data Description Records Download
Count points Count points in Dorset details. 221 JSON | CSV
Traffic Traffic is calculated by multiplying AADF by the corresponding length of road and by the number of days in the given year. 1 JSON | CSV
Average annual daily flow Number of vehicles that travel past the count point (in both directions) on an average day of the year. 221 JSON | CSV
Average annual daily flow by direction Number of vehicles that travel past the count point on an average day of the year, by direction of travel. 436 JSON | CSV
Raw counts Vehicle counts recorded at this count point. 3,600 JSON | CSV