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Guidance

Road length statistics information

Guide to road length statistics, source documents, accompanying notes, definitions and supporting technical documents.

Updates to this page

From:
Department for Transport
Published:
10 March 2022
Last updated:
12 February 2026
Show all updates

  1. The methodology note has been updated to include information about Combined Authorities and Subnational Transport Bodies.

  2. Documents updated for the latest road lengths release.

  3. Methodology note, notes and definitions and pre-release access list updated for 2023 report.

  4. Methodology note and pre-release access list updated.

  5. First published.

Applies to England, Scotland and Wales

Documents

Road lengths in Great Britain statistics: Notes and definitions

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Road lengths in Great Britain statistics: Methodology and quality note

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Road length statistics: pre-release access

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Details

Road length statistics guide explaining notes, definitions, sources plus support technical material.

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