Research and analysis

Wider economic impacts in TAG: output change in imperfectly competitive markets

Research to review the 10% uplift applied to business user benefits in transport analysis guidance (TAG).

• From: Department for Transport
• Published: 31 October 2024

Documents

Review of output change in imperfectly competitive markets parameter for transport analysis guidance

PDF, 1.1 MB, 50 pages

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Final consolidation of uplift factor calculations for imperfect competition

PDF, 858 KB, 18 pages

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Details

This research looks at the transport analysis guidance (TAG) and the wider economic impact of transport investment. Findings recommend amending the uplift factor as will bring benefits to the direct users and will reduce costs for firms operating in ‘imperfect competition’.

It is done in 2 parts: 

• a review of output change in imperfectly competitive markets parameter for TAG
• a final consolidation of uplift factor calculations for imperfect competition

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 October 2024