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This document gives guidance on environmental impact appraisal.
The previous version of this guidance was published in May 2022.
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 19 October 2023 +show all updates
Added forthcoming change about appraisal guidance updates.
