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Guidance

TAG unit A1-3 user and provider impacts

Transport analysis guidance (TAG) on the analysis of user and provider impacts in transport appraisals.

Updates to this page

From:
Department for Transport
Published:
28 March 2017
Last updated:
28 May 2026
Show all updates

  1. TAG unit A1-3 updated.

  2. Updated with forthcoming changes for May 2026.

  3. TAG unit A1-3 updated.

  4. Added 'Forthcoming change: appraisal data update'.

  5. Updated with forthcoming changes for May 2025.

  6. Unit A1.3 guidance updated.

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

  8. Updated with latest version of unit A1-3 guidance.

  9. Two forthcoming change documents regarding emissions and fuel cost curves plus vehicle kilometer splits for cars added.

  10. First published.

Documents

TAG unit A1-3 user and provider impacts

PDF, 1010 KB, 61 pages

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Details

This document gives guidance on the analysis of user and provider impacts in transport appraisals.

The previous version of this guidance was published in May 2025.

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.

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