Gauge

Authoritative data on UK transport and policy questions, drawn directly from government and operator sources.

London Bridge Traffic, 2000 to 2024

Annual traffic volumes on every Thames road bridge, before and after Hammersmith Bridge closed in 2019.

Sources
TfL Thames Screenline (FOI 4078 2425); TfL Thames Screenline (FOI 3707 2425); DfT Road Traffic Statistics (AADF).
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River Thames road bridges, London, United Kingdom, 2000 to 2024.
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Preview of London Bridge Traffic, 2000 to 2024 | Gauge

Putney Bridge Traffic and Bus Speeds

Daily and annual traffic on Putney Bridge, with vehicle-type breakdowns and bus speeds.

Sources
DfT Road Traffic Statistics (Putney approach AADF); TfL Thames Screenline (FOI 4078 2425); TfL bus speeds; Vivacity AI camera counts (Putney); ATC counts (Putney Bridge).
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Putney Bridge, London, United Kingdom, 1986 to 2026.
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Preview of Putney Bridge Traffic and Bus Speeds | Gauge

Putney Air Quality, 2010 to 2026

NO2 at Putney roadsides and background sites, with markers for the policy interventions that changed it.

Sources
London Air Quality Network (King's College London and Imperial); LAQN API; Wandsworth Council Annual Air Quality Status Report 2021; Wandsworth Council Annual Air Quality Status Report 2024; putney.news: From most polluted to legal compliance.
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Putney and Barnes, London, United Kingdom, 2010 to 2026.
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Preview of Putney Air Quality, 2010 to 2026 | Gauge

Hammersmith Bridge Timeline, 1983 to 2026

A history of closures, repairs, and motor traffic on Hammersmith Bridge from 1983 to today.

Sources
TfL Thames Screenline (FOI 4078 2425); DfT Road Traffic Statistics; LBHF Council; GOV.UK Hammersmith Bridge taskforce; BBC News; Evening Standard; hammersmithbridge.org.uk; hammersmithbridgesos.co.uk; Keane UCL thesis (2001).
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Hammersmith Bridge, London, United Kingdom, 1983 to 2026.
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Preview of Hammersmith Bridge Timeline, 1983 to 2026 | Gauge

Pedal Cyclist Casualties in Great Britain and London, 1927 to 2025

Pedal cyclist deaths and serious injuries in GB and London since 1927, with miles cycled for context.

Sources
DfT STATS19 (RAS0101); DfT STATS19 (RAS0102); DfT STATS19 (RAS0402); DfT Road Traffic Estimates (TRA0403); TfL cycling data.
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Great Britain and London, United Kingdom, 1927 to 2025.
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Preview of Pedal Cyclist Casualties in Great Britain and London, 1927 to 2025 | Gauge