Safer streets from reduced traffic (1)

Questions to the Mayor of London – answered on 8th January 2021.

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Photo of Caroline Russell Caroline Russell Green

Changes in traffic volumes due to both lockdowns this year present a natural experiment to study the relationship between traffic volumes and road collisions. Will you commission a full analysis of the impact of changes in traffic in 2020 and the effect on collisions in the upcoming Transport for London (TfL) report, Casualties in Greater London during 2020?

Photo of Sadiq Khan Sadiq Khan Mayor of London

Throughout the past nine months, Transport for London (TfL) has proactively used the data it holds to understand the changing risks on London’s roads and will continue to do so. This has been regularly reported in TfL’s quarterly Safety, Health and Environment report, reported to its Safety, Sustainability and Human Resources Panel.

TfL is currently validating 2020 collision data to meet Department for Transport (DfT) reporting instructions. Finalised figures will be published in TfL’s ‘Casualties in Greater London during 2020’ factsheet in spring 2021, in line with the DfT’s timescale for publication of the national dataset. The factsheet will include an assessment of the impact of the pandemic on road safety.

As part of a wider assessment of road safety during the pandemic, TfL’s Travel in London Report 13, published at, considers developments related to the pandemic in 2020. This analysis is based on preliminary figures that are provisional and subject to change.