What is WebTAG?

Transport Analysis Guidance Website - WebTAG

The Department for Transport has initiated this website to provide detailed guidance on the appraisal of transport projects and wider advice on scoping and carrying out transport studies.

The guidance should be seen as a requirement for all projects/studies that require government approval. For projects/studies that do not require government approval TAG should serve as a best practice guide.

The site originally brought together the Department's existing documents, The Guidance on the Methodology for Multi-Modal Studies (GOMMMS) and associated supplements and errata, Applying the Multi-Modal Approach to Appraisal to Highway Schemes (The Bridging Document) and Major Scheme Appraisal in Local Transport Plans. The material on this site supersedes these documents.

The Department will release all future updates of guidance via this site and will aim to incorporate other relevant documents when the opportunity arises. When this occurs, the material on this site will supersede those documents.

For more information see Introduction to Transport Analysis (TAG Unit 1.1).