Guidance

TAG data book

Historical and reference information on all the appraisal and modelling values referred to in the transport analysis guidance (TAG).

Documents

TAG data book

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Details

The TAG data book provides all of the appraisal and modelling values referred to in TAG guidance. The data book features:

  • historical information
  • factual reference information

about the appraisal and modelling values.

The previous release of this data book is available on the National Archives.

Published 29 November 2018