New appraisal values of travel time saving and reliability in Great Britain

Batley, Richard; Bates, John; Bliemer, Michiel; B�rjesson, Maria; Bourdon, Jeremy; Cabral, Manuel Ojeda; Chintakayala, Phani Kumar; Choudhury, Charisma; Daly, Andrew; Dekker, Thijs; Drivyla, Efie; Fowkes, Tony; Hess, Stephane; Heywood, Chris; Johnson, Daniel; Laird, James; Mackie, Peter; Parkin, John; Sanders, Stefan; Sheldon, Rob; Wardman, Mark; Worsley, Tom

Abstract

© 2017, The Author(s). This paper provides an overview of the study ‘Provision of market research for value of time savings and reliability’ undertaken by the Arup/ITS Leeds/Accent consortium for the UK Department for Transport (DfT). The paper summarises recommendations for revised national average values of in-vehicle travel time savings, reliability and time-related quality (e.g. crowding and congestion), which were developed using willingness-to-pay (WTP) methods, for a range of modes, and covering both business and non-work travel purposes. The paper examines variation in these values by characteristics of the traveller and trip, and offers insights into the uncertainties around the values, especially through the calculation of confidence intervals. With regards to non-work, our recommendations entail an increase of around 50% in values for commute, but a reduction of around 25% for other non-work—relative to previous DfT ‘WebTAG’ guidance. With regards to business, our recommendations are based on WTP, and thus represent a methodological shift away from the cost saving approach (CSA) traditionally used in WebTAG. These WTP-based business values show marked variation by distance; for trips of less than 20miles, values are around 75% lower than previous WebTAG values; for trips of around 100miles, WTP-based values are comparable to previous WebTAG; and for longer trips still, WTP-based values exceed those previously in WebTAG.

Citation

Batley, R., Bates, J., Bliemer, M., Börjesson, M., Bourdon, J., Cabral, M. O., …Worsley, T. (2019). New appraisal values of travel time saving and reliability in Great Britain. Transportation, 46(3), 583-621. https://doi.org/10.1007/s11116-017-9798-7

• Journal Article Type: Article
• Acceptance Date: Jun 30, 2017
• Publication Date: Jun 1, 2019
• Deposit Date: Sep 18, 2017
• Publicly Available Date: Sep 18, 2017
• Journal: Transportation
• Print ISSN: 0049-4488
• Electronic ISSN: 1572-9435
• Publisher: Springer Verlag
• Peer Reviewed: Peer Reviewed
• Volume: 46
• Issue: 3
• Pages: 583-621
• DOI: https://doi.org/10.1007/s11116-017-9798-7
• Keywords: Value of travel time savings, value of reliability, value of crowding, value of congestion, business, non-work
• Public URL: https://uwe-repository.worktribe.com/output/883225
• Publisher URL: http://dx.doi.org/10.1007/s11116-017-9798-7
• Contract Date: Sep 18, 2017