Permanent project revision
Revision 2026-08-26-claim-mapping · effective 2026-07-25
Current revision. This is the snapshot used by the live entity page.
Added a six-claim evidence mapping and a sourced lesson; corrected the attribution of the 113-scheme figure, which belongs to the London dataset and a 2025 casualty study, not to the traffic meta-analysis, whose sample is 46 schemes in 11 boroughs; added that peer-reviewed casualty study and the government review's own removal and support figures.
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replace /snapshot/projectFingerprint — Updated projectFingerprint to the current sourced project record.replace /snapshot/claims — Updated claims to the current sourced project record.replace /snapshot/sources — Updated sources to the current sourced project record.The text below is copied verbatim from the published record. Each claim names the source dossiers that carry it; caveats stay attached to the claim they qualify.
clm-34d2a67d27a8d1f6
quantitative
By June 2024, 113 LTNs covering 40 square kilometres had been implemented in London and 27 of them had been removed, typically after public protest, a negative consultation or a change in the borough's political leadership
clm-48e17519328f3dd7
quantitative
one was ordered out by a court in 2025
clm-da97c9e17ce7f8ee
quantitative
A peer-reviewed meta-analysis of monitoring data from 46 schemes in 11 boroughs found mean motor traffic on internal roads falling from 1,780 to 930 vehicles, against a projected 1,745 if background trends had held, and only a marginal association with traffic volume on boundary roads
clm-7ebf60ee9dbcdeba
quantitative
A second peer-reviewed study, using police-reported casualty data for all 113 London LTNs, found a 14% reduction in casualties at junctions between newly filtered minor roads and the surrounding major roads (95% CI −21% to −8%)
clm-47bbb5e3b3e075a0
quantitative
The government's own commissioned review across four English areas found 82% of schemes still in place and 18% removed, with 45% of residents supporting their local scheme against a lower share opposed
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descriptive
the removals track protest, consultation results and changes of administration rather than measurements
This layer records what is known about each source, what is still missing, and the exact snapshot this page is rendering. A missing date, archive or hash stays visible as missing.
Awaiting operator and domain-expert review; publication of this revision implies neither.
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src-2dead611ed8f37f7Authoritative independent dataset: 113 LTNs covering ~40 km2 implemented in London, 27 removed by end-June 2024, typically after protest, negative consultation or political change.
src-58258fe870131247Peer-reviewed. Large average traffic reduction inside LTNs (reported ~46.9%) with little evidence of displacement onto boundary roads. (Page 403s to automated fetch; existence and findings confirmed via WestminsterResearch record and multiple independent summaries.)
src-7bd112b4433a38a7Independent government-commissioned review across London, Birmingham, Wigan, York: traffic reduced inside, adverse boundary-road impacts limited; twice as many residents supported (45%) as opposed (21%); nationally ~18% of schemes removed.
src-8dc29c583d8e5566Established-press coverage of the controversy: a London LTN ordered removed by the courts, illustrating the legal and political contestation around camera-enforced schemes.
src-ed85fded46ca3418Open-access peer-reviewed study using police casualty data 2012-2024 across all 113 London LTNs. Carries both the corpus figures — 113 LTNs covering 40 km2 implemented by June 2024, 27 since removed, typically after protest, a negative consultation or political change — and the safety result: a 14% reduction in casualties at junctions between newly filtered minor roads and surrounding major roads (95% CI -21% to -8%).