Guidance

TAG: forthcoming changes

Record of upcoming changes to transport analysis guidance (TAG).

• From: Department for Transport
• Published: 29 November 2018
• Last updated: 28 November 2024 — See all updates

Documents

Forthcoming change: base year update

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Forthcoming change: operating cost parameters

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Forthcoming change: appraisal of new modes guidance

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Details

Planned updates to transport analysis guidance (TAG), including details of the guidance being updated and planned dates of release in line with the TAG orderly release process.

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.

Published 29 November 2018
Last updated 28 November 2024 + show all updates

1. 28 November 2024

   Added 'Forthcoming change: base year update' and 'Forthcoming change: operating cost parameters'.

2. 17 October 2024

   Added forthcoming change notices about guidance on the appraisal of new modes, wider economic impacts updates, and updates to economic and demographic data and clarified guidance on rail appraisal.

3. 30 May 2024

   TAG: forthcoming changes updated.

4. 25 April 2024

   Added 'Forthcoming change: spring 2024 data book and guidance updates' and 'Forthcoming change: modelling guidance updates'.

5. 19 October 2023

   Added forthcoming changes about appraisal guidance updates and a new TAG unit on spending objective analysis.

6. 6 October 2023

   Added forthcoming change about carbon valuation.

7. 19 April 2023

   Added forthcoming change: spring 2023 data book and guidance updates.

8. 5 April 2023

   Added forthcoming change: accounting for COVID-19 in transport modelling.

9. 21 December 2022

   Updates to guidance on forecasting and uncertainty.

10. 30 November 2022

    Expired forthcoming change notes removed.

11. 29 November 2018

    First published.