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Research: Congested values of travel time (CVTT) in transport modelling

Department For Transport

April 14
09:34 2023

Congestion dependent values of time in transport modelling: further PRISM testing

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Congested values of travel time: re-analysis of the 2014 to 15 SP study

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If you use assistive technology (such as a screen reader) and need aversion of this document in a more accessible format, please email webmasterdft@dft.gov.uk.Please tell us what format you need. It will help us if you say what assistive technology you use.

Details

Two reports covering the research undertaken in applying congestion multipliers to values of travel time saving (VTTS).

The first report investigates the use of congested values of travel time (CVTT) in model forecasting and scheme appraisal. It develops a proof of concept using the policy-responsive integrated strategy model (PRISM) of the West Midlands Combined Authority.

The second report undertakes a re-analysis of a 2014 to 2015 UK values of travel time (VTT) study to address concerns around the robustness of the UK congestion multipliers estimated at the time. In doing so, the report:

  • analyses howCVTTvalues differ by journey purpose and length
  • reviews the approaches to deriving UK headline VTT
  • considers the need for, and possible approaches to, a newCVTTstudy where respondents are re-surveyed and values are updated
Published 14 April 2023

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