Road condition statistics provides information on the condition of local authority road, motorways and trunk roads in England.
The statistics are drawn from a number of sources, including SCANNER surveys (machine surveys of local authorities’ classified roads), TRACS surveys (machine surveys of the Highways England’s road network), manual surveys of unclassified roads, and skidding resistance surveys.
Road length statistics provide estimates of the length of all roads maintained at public expense in Great Britain, by road category and region.
Within these statistics, roads are classified as either “major” or “minor”. Major roads include motorways and all class ‘A’ roads. These roads usually have high traffic flows and are often the main arteries to major destinations. Minor roads comprise ‘B’ and ‘C’ classified roads in addition to unclassified roads. Further information on these road classes and the underlying data sources can be found in the guidance published alongside the release.
In addition to road class, road lengths statistics are classified by urban and rural roads. Urban roads are major and minor roads that sit within a built up area, with a population of 10,000 or more in England and Wales or 3,000 or more in Scotland. Rural roads are major and minor roads outside urban areas.
For 2017, the England and Wales figures are based on the definition published by the Office for National Statistics (ONS), which is derived from the 2011 census. The figures for Scotland are based on the 2013 to 2014 definition published by the Scottish Government in November 2014. Data for years prior to 2017 use the previous definition which is based on the 2001 Communities and Local Government definition of Urban Settlements.
All road condition statistics for England are published by the department are official statistics. The department’s view is that these statistics are robust and have been produced to a suitable standard.
Statistics for Scotland, Wales are published separately by the Scottish and Welsh Governments respectively.