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Guidance: TAG unit M4 forecasting and uncertainty

Department For Transport

August 8
08:37 2022

Forthcoming change note to TAG unit M4 forecasting and uncertainty

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TAG unit M4 forecasting and uncertainty, including forthcoming changes for November 2022

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If you use assistive technology (such as a screen reader) and need aversion of this document in a more accessible format, please email webmasterdft@dft.gov.uk.Please tell us what format you need. It will help us if you say what assistive technology you use.

Details

This document gives guidance on the analysis of forecasting and uncertainty in transport appraisals.

The guidance is supplemented by the Uncertainty Toolkit.

The previous version of this unit was TAG unit M4 forecasting and uncertainty, May 2018.

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 31 May 2019
Last updated 8 August 2022 +show all updates
  1. Forthcoming change to guidance note added, giving details of updates to be made in November 2022.

  2. First published.

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