Guidance: TAG unit M4 forecasting and uncertainty

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Department For Transport

December 21

15:35 2022

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TAG unit M4 forecasting and uncertainty

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Forthcoming changes to TAG unit M4 forecasting and uncertainty

https://www.gov.uk/government/publications/tag-forthcoming-changes/updates-to-guidance-on-forecasting-and-uncertainty

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 guidance was released in May 2019.

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 21 December 2022 +show all updates

21 December 2022
TAG unit M4 forecasting and uncertainty updated.
8 August 2022
Forthcoming change to guidance note added, giving details of updates to be made in November 2022.
31 May 2019
First published.

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