Collection

Road traffic statistics

Road traffic statistics information.

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

Methodology review

The Department for Transport’s road traffic statistics team are conducting a review of the traffic estimates for Great Britain, which is due to be completed in 2016.

The aim of the review is to ensure robust traffic estimates continue to be produced, seeking innovation and greater value for money in their production while protecting user needs.

A report summarising the review so far and documents detailing individual projects is available.

Any feedback is welcomed via the contact details above.

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 2015

  1. Road traffic estimates for Great Britain: April to June 2015

    • Statistics - national statistics
  2. Road traffic estimates in Great Britain: 2014

    • Statistics - national statistics
  3. Road traffic estimates for Great Britain: January to March 2015

    • Statistics - national statistics
  4. Road traffic estimates for Great Britain: October to December 2014

    • Statistics - national statistics
  5. Strategic road network statistics

    • Statistics

Publications released during 2014

  1. Road traffic estimates for Great Britain: July to September 2014

    • Statistics - national statistics
  2. Road traffic estimates for Great Britain: Apr to Jun 2014

    • Statistics - national statistics
  3. Use of the strategic road network

    • Statistics
  4. Road traffic estimates in Great Britain: 2013

    • Statistics - national statistics
  5. Road traffic estimates Great Britain: Jan to Mar Q1 2014

    • Statistics - national statistics
  6. Quarterly and provisional annual road traffic estimates: Great Britain (Oct to Dec) Q4 2013

    • Statistics - national statistics

Publications released during 2013

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

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

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

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

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

    • Statistics - national statistics

Publications released during 2012

  1. Road traffic estimates 2010 (revised)

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

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

    • Statistics - national statistics

Data tables associated with this series

  1. Traffic volume - miles (TRA01)

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

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

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

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

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

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

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

    • Statistical data set
  9. Road traffic: Statistical tables index

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

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

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

    • Statistical data set