Guidance

TAG unit A4-1 social impact appraisal

Provides methods allowing analysts to attempt to quantify and monetise various social impacts in transport appraisals.

From:
Department for Transport
Published
31 May 2019
Last updated
3019 NovemberOctober 2022 — See all updates

Documents

TAG unit A4-1 social impact appraisal

PDF, 554719 KB, 5039 pages

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Forthcoming change to TAG unit A4-1

https://www.gov.uk/government/publications/tag-forthcoming-changes/updates-to-guidance-on-scheme-modelling-and-appraisal

COBALT software and manual

https://www.tagsoftware.co.uk/COBALT

Details

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 MayJuly 20222021.

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 3019 NovemberOctober 2022 + show all updates

  1. TAG unit A4-1 updated.

  2. Forthcoming changes for November 2022.

  3. Unit A4.1 guidance updated.

  4. Forthcoming change to guidance note added, the note details guidance alterations to be implemented in May 2022.

  5. Updated with new version of unit A4-1 guidance.

  6. Updated non-wage labour uplift to be 1.265 following error of being 1.26.

  7. First published.