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Reliability of journeys on the Highways England motorway and 'A' road network

Reliability journey statistical indicators on Highways England roads.

From:
Department for Transport
Published
12 December 2013
Last updated
11 June 2015 — See all updates

Documents

Measurement template: Journey time reliability update August 2013

PDF, 138 KB, 5 pages

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On time reliability data table: April 2010 to March 2015

MS Excel Spreadsheet, 3.49 KB

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Details

DfT Business plan impact indicator

Geographical coverage: England
Information broken down by: national level aggregation

Latest data

78.7% of journeys on Highways England (formerly Highways Agency) managed roads between April 2014 and March 2015 were ‘on time’. This is a 0.1 percentage point increase on the previous rolling year, ending February 2015.

During the month of March 2015, provisional data shows that 79.9% of journeys on Highways England’s motorway and ‘A’ road network were ‘on time’. This is a 1.0 percentage point increase on the equivalent figure for March 2014.

Percentage of journeys on Highways England motorways and ‘A’ roads ‘on time’: monthly from June 2012

Year ending 1 Month Year ending percentage points change
June 2012 80.7 79.4 -0.2
July 2012 80.5 78.6 -0.3
August 2012 80.2 78.6 -0.2
September 2012 79.8 77.4 -0.4
October 2012 79.5 76.4 -0.4
November 2012 79.0 73.3 -0.5
December 2012 78.6 70.1 -0.5
January 2013 78.0 73.5 -0.6
February 2013 77.6 76.0 -0.4
March 2013 77.1 77.7 -0.5
April 2013 77.2 81.7 +0.1
May 2013 77.0 80.2 -0.2
June 2013 77.2 81.2 +0.2
July 2013 77.3 80.2 +0.1
August 2013 77.3 78.5 0.0
September 2013 77.4 78.7 0.1
October 2013 77.4 75.8 -0.1
November 2013 77.5 74.6 +0.1
December 2013 77.8 74.6 +0.3
January 2014 78.0 75.7 +0.2
February 2014 78.0 76.1 0.0
March 2014 78.1 78.8 +0.1
April 2014 78.0 80.8 -0.1
May 2014 78.1 81.0 +0.1
June 2014 78.2 82.4 +0.1
July 2014 78.2 80.0 0.0
August 2014 78.1 77.6 -0.1
September 2014 78.3 81.6 +0.2
October 2014 78.4 76.7 +0.1
November 2014 78.5 75.3 +0.1
December 2014 78.6 76.2 +0.1
January 2015 78.7 76.6 +0.1
February 2015 78.6 76.1 0.0
March 2015 78.7 79.9 +0.1

Source: Highways England Traffic Information System (HATRIS) Database

P = provisional

Background information

This indicator monitors the reliability of journeys made on Highways England’s motorway and A road network.

The indicator is measured by the percentage of ‘journeys’ on these roads that are ‘on time’. For this measure:

  • a ‘journey’ represents travel between adjacent junctions on the network
  • an ‘on time journey’ is defined as one which is completed within a set reference time, drawn from historic data on that particular section of road
  • reference journey times are updated for the April data each year, further information on the impact of updating reference times can be found in the latest statistical release

As set out in our latest release of the reliability statistics, we are planning to change the method we use to calculate reliability on Highways England roads for April 2015 data onwards, as part of a wider package of changes. As a result, there will be no further updates to the statistical series for the current reliability measure after the final March 2015 statistics. Reliability statistics using the new methodology are expected to be published from August 2015.

  • publishing schedule: monthly
  • last updated: 11 June 2015
  • next update: August 2015 (using the new reliability statistics methodology)

Further information

For further information on this impact indicator, please contact: Jay Symonds or 020 7944 6579

Published 12 December 2013
Last updated 11 June 2015 + show all updates

  1. Updated to the latest data for March 2015.

  2. Updated to the latest data for March 2015.

  3. Updated to the latest data for February 2015.

  4. Updated to the latest data for January 2015.

  5. Updated to the latest monthly data for October 2014.

  6. Monthly data updated for August 2014.

  7. Reliability of journeys on the Highways Agency motorway and A road network updated with January 2014.

  8. Reliability of journeys on the Highways Agency motorway and A road network updated with December 2013.

  9. First published.

  10. Monthly congestion reliability indicator page updated to November 2012. This outlines the latest data.

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