Collection

Road traffic statistics

This series brings together all documents relating to road traffic statistics

See all statistics published by DfT

DfT traffic statistics provide estimates of the vehicle miles travelled each year in Great Britain, by vehicle type, road category and region. The department releases both quarterly and annual estimates, with the latter providing more detail and precision than the former.

In addition, the following geographical website allows users to view and download estimated traffic flows on every link of the ‘A’ road and motorway network in Great Britain. An interactive map provides a mapped background to identify traffic flows in specific areas of the country.

Traffic flow website

An index sheet of all the road traffic statistical tables is available:

Contact us

Road traffic and free flow speeds statistics enquiries

Technical information

Provisional quarterly traffic estimates are based on traffic data collected continuously from a national network of around 180 Automatic Traffic Counters (ATC). Quarterly estimates are provisional until they have been constrained by the final annual estimates each year.

Annual road traffic estimates are mainly based on around ten thousand manual counts, which are combined with ATC data and road lengths to produce overall estimates. Traffic estimates for major roads are based on a census of all such roads whereas traffic estimates for minor roads are estimated by calculating growth rates from a fixed sample of count points on the minor road network.

Further technical information on the traffic series statistics and the production of traffic estimates:

Road traffic, speeds and congestion statistics guidance

National statistics

All of the statistics published in this series are national statistics. Road traffic statistics was assessed by the UK Statistics Authority and confirmed as national statistics in February 2013.

Assessment of statistics on maritime, road traffic, bus, taxi, light rail and disabled parking badges

Letter of confirmation

Pre-release access list

The post holders given access to these statistics up to 24 hours prior to release are available in the pre-release access list.

Pre-release access lists for road traffic, speeds and congestion series

Publications released during 2014

  1. Quarterly and provisional annual road traffic estimates: Great Britain (Oct to Dec) Q4 2013

    • 13 February 2014
    • Statistics - national statistics

Publications released during 2013

  1. Road traffic estimates for Great Britain: quarter 4 2012

    • 14 February 2013
    • Statistics - national statistics
  2. Road traffic estimates for Great Britain: quarter 1 2013

    • 9 May 2013
    • Statistics - national statistics
  3. Road traffic estimates in Great Britain: 2012

    • 27 June 2013
    • Statistics - national statistics
  4. Road traffic estimates for Great Britain: quarter 2 2013

    • 8 August 2013
    • Statistics - national statistics
  5. Quarterly road traffic estimates: Great Britain (Jul to Sep) Q3 2013

    • 14 November 2013
    • Statistics - national statistics

Publications released during 2012

  1. Road traffic estimates 2010 (revised)

    • 9 February 2012
    • Statistics - national statistics
  2. Road traffic estimates: 2011

    • 28 June 2012
    • Statistics - national statistics
  3. Road traffic estimates for Great Britain: quarter 3 2012

    • 8 November 2012
    • Statistics - national statistics

Data tables associated with this series

  1. Traffic volume - miles (TRA01)

    • 13 February 2014
    • Statistical data set
  2. Traffic volume - kilometres (TRA02)

    • 13 February 2014
    • Statistical data set
  3. Average annual daily flow and temporal traffic distributions (TRA03)

    • 27 June 2013
    • Statistical data set
  4. Quarterly traffic estimates (TRA25)

    • 13 February 2014
    • Statistical data set
  5. Heavy goods vehicle traffic (TRA31)

    • 27 June 2013
    • Statistical data set
  6. Foreign registered vehicles in GB traffic (TRA32)

    • 10 November 2012
    • Statistical data set
  7. Traffic by local authority (TRA89)

    • 27 June 2013
    • Statistical data set
  8. Forecasts of traffic (TRA99)

    • 25 November 2013
    • Statistical data set
  9. Road traffic: Statistical tables index

    • 23 January 2013
    • Statistical data set
  10. Pedal cycle traffic (TRA04)

    • 27 June 2013
    • Statistical data set
  11. Strategic road network traffic (TRA41)

    • 27 June 2013
    • Statistical data set
  12. Traffic based on a static road management status (TRA42)

    • 27 June 2013
    • Statistical data set

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