TAG unit A3 environmental impact appraisal
Guidance on the analysis of environmental impacts in transport appraisals.
- From:
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- Published
- 31 May 2019
- Last updated
-
29
28MayNovember20252024— See all updates
Documents
TAG unit A3 environmental impact appraisalappraisal, including forthcoming changes for May 2025
PDF, 909 KB, 114 pages
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Forthcoming change: base year update
https://www.gov.uk/government/publications/tag-forthcoming-changes/forthcoming-change-base-year-update
Details
This document gives guidance on environmental impact appraisal.
The previous version of this guidance was published in MayNovember 2024.2023.
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.
TAG unit A3 environmental impact appraisalappraisal, including forthcoming changes for May 2025
PDF, 909 KB, 114 pages
This file may not be suitable for users of assistive technology.
Request an accessible format.
Forthcoming change: base year update
https://www.gov.uk/government/publications/tag-forthcoming-changes/forthcoming-change-base-year-update
Details
This document gives guidance on environmental impact appraisal.
The previous version of this guidance was published in MayNovember 2024.2023.
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
Last updated 29
-
Updated TAG unit A3.
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Update history
2025-12-11 10:00
TAG unit A3 updated.
2025-10-16 09:30
Added forthcoming change: vehicle emissions carbon tool..
2025-05-29 09:30
Updated TAG unit A3.
2024-11-28 10:00
Updated with forthcoming changes for May 2025.
2024-05-30 10:00
TAG unit A3 updated.
2024-04-25 10:00
Forthcoming changes added.
2023-11-30 10:00
TAG unit A3 guidance updated.
2023-10-19 10:00
Added forthcoming change about appraisal guidance updates.
2023-10-06 09:30
Added forthcoming change about carbon valuation.
2023-05-31 10:00
TAG unit A3 guidance updated.
2023-04-19 09:43
Added forthcoming change: spring 2023 data book and guidance updates
2022-05-30 09:30
Unit A3 guidance updated.
2022-04-29 11:10
Forthcoming change to guidance note added, the note details guidance alterations to be implemented in May 2022.