Change of https://www.gov.uk/government/publications/tag-unit-a2-1-wider-economic-impacts

Change description : 2025-05-29 09:30:00: Added TAG unit A2-1. [Guidance and regulation]

Showing diff : 2024-11-28 10:02:28.496791689 +00:00..2025-05-29 08:43:43.396385631 +00:00

Guidance

TAG unit A2-1 wider economic impacts

Transport analysis guidance (TAG) on the analysis of wider economic impacts in transport appraisals.

From:
Department for Transport
Published
31 May 2019
Last updated
2829 NovemberMay 20242025 — See all updates

Documents

TAG unit A2-1 wider economic impacts appraisal

PDF, 559713 KB, 58 pages

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Details

This document details the overall framework underpinning the analysis of wider economic impacts in transport appraisals.

The WITA software is in conjunction with this guidance to estimate the wider economic impacts of an appraisal.

The previous version of this guidance was published in MayNovember 2019.2024.

TAG provides information on the role of transport modelling and appraisal, and how the transport appraisal process supports the development of investment decisions to support a business case.

Updates to this page

Published 31 May 2019
Last updated 2829 NovemberMay 2024 + show2025 href="#full-history">+ show all updates

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Update history

2026-04-16 10:00
Added forthcoming change on the impacts of marginal external costs on GDP.

2025-05-29 09:30
Added TAG unit A2-1.

2024-11-28 10:00
TAG unit A2-1 wider economic impacts appraisal updated.

2024-10-17 09:30
Added ‘Forthcoming change: update to wider economic impacts’.