Road Network Lengths in Great Britain by Local Authority and Road Class, 2005 Onwards

Greater London Authority provides road lengths in miles, categorized by road class, for each local authority and region of Great Britain. The dataset includes motorways, trunk roads, principal roads, and minor roads, with distinctions for rural and urban areas. It is sourced from the National Roads Database maintained by the UK Department for Transport.

Use Cases

• Analyze regional infrastructure investment disparities based on road class distribution.
• Model traffic capacity and network resilience based on road type and length data.
• Assess urban-rural connectivity by comparing minor road lengths in different areas.
• Track changes in road network composition over time for longitudinal policy studies.

Strengths

• Data covers Great Britain at the local authority and regional level, providing granular geographic detail.
• Includes a time series starting from 2005, allowing for longitudinal analysis.
• Roads are categorized into specific classes (Motorway, Trunk, Principal, Minor) and urban/rural designations.

Limitations

• Column-level documentation is absent; field semantics must be inferred after download.
• Row count is unknown, which may limit suitability assessment for large-scale modeling.
• Freshness should be verified as the last metadata update is dated 2026-06-24.

Provenance

Source

Department for Transport (UK) National Roads Database, aggregated by the Greater London Authority.

Collection Method

Likely compiled from official administrative records and surveys.

Time Range

Since 2005.

Freshness

Last updated 2026-06-24 21:11:34.880849; update frequency is unknown.

Geography

Great Britain (England, Scotland, Wales), by local authority and region.