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Guidance on the analysis of social impact appraisal in transport appraisals.
The Cobalt software is used with the guidance to calculate the impact on accidents and when creating a road scheme economic appraisal.
The previous version of this guidance was published in July 2021.
TAG provides information on the role of transport modelling and appraisal, and how the transport appraisal process supports the development of investment decisions and business cases.
Published 31 May 2019 Last updated 19 October 2022 +show all updates
Forthcoming changes for November 2022.
Unit A4.1 guidance updated.
Forthcoming change to guidance note added, the note details guidance alterations to be implemented in May 2022.
Updated with new version of unit A4-1 guidance.
Updated non-wage labour uplift to be 1.265 following error of being 1.26.
