This statistical release presents estimates for road lengths in Great Britain in 2012.
- The total road length in Great Britain in 2012 was estimated to be 245.4 thousand miles, an increase of 2.0 thousand miles (0.8%) over 10 years.
- Minor roads made up 87% of total road length, with motorways and ‘A’ roads accounting for 1% and 12% respectively.
- Despite accounting for only 13% of road length in 2012, major roads (motorways and ‘A’ roads) accounted for 65% of road traffic.
- The trunk road network (centrally managed motorways and ‘A’ roads) accounted for 7.5 thousand miles, a decrease of 1.3 thousand miles since 2002. This decrease reflects the government’s de-trunking program (the transfer of centrally managed roads to local authorities). Most of these transfers were carried out between 2001 and 2003.
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