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This document describes how to apply WebTAG in the context of aviation interventions.
This Transport Analysis Guidance (TAG) unit was updated in December 2015 to reflect changes to TAG unit A3 (environmental impact appraisal) relating to the valuation of noise impacts.
WebTAG 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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