Guidance

TAG unit A2-4 productivity impacts

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

From:
Department for Transport
Published
29 May 2020
Last updated
29 May 2025 — See all updates

Documents

TAG unit A2-4 productivity impacts

PDF, 801 KB, 46 pages

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Details

This document gives guidance on the analysis of productivity 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 November 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 29 May 2020
Last updated 29 May 2025 show all updates

  1. TAG unit A2-4 updated.

  2. TAG unit A2-4 productivity impacts updated.

  3. Added 'Forthcoming change: update to wider economic impacts'.

  4. TAG unit A2-4 updated.

  5. Forthcoming changes added.

  6. First published.

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