The valuation of travel time reliability: does congestion matter?

This paper addresses the valuation of travel time reliability in the presence of endogenous congestion and the role of scheduling preferences. The bottleneck model of road congestion is amended by considering stochastic travel times. The authors thereby take into account the influence of travel time variability on the congestion profile. The cost of travel time variability is the same with exogenous or endogenous congestion for two classes of preferences: linear marginal utility of time (MUT) at work and constant-exponential MUT. Therefore, cost-benefit analyses of travel time reliability improvements yield consistent results even if departure time adjustments are not accounted for. For a-ß-γ preferences, departure time adjustments decrease congestion, which strongly mitigates the cost of travel time variability. Cost-benefit analyses need in this case to explicitly consider the departure time choice, to avoid being biased for the rush hour period (when congestion is strong). A method is proposed to correct this bias when necessary.

• Record URL:
  https://doi.org/10.1016/j.trb.2016.12.003
• Record URL:
  http://www.sciencedirect.com/science/article/pii/S019126151630491X
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/01912615
• Supplemental Notes:
  • Abstract reprinted with permission of Elsevier.
• Authors:
  • Xiao, Yu
  • Coulombel, Nicolas
  • de Palma, André
• Publication Date: 2017-3

Language

• English

Media Info

• Media Type: Web
• Features: Appendices; Figures; References; Tables;
• Pagination: pp 113-141
• Serial:
  • Transportation Research Part B: Methodological
  • Volume: 97
  • Publisher: Elsevier
  • ISSN: 0191-2615
  • Serial URL: http://www.sciencedirect.com/science/journal/01912615

Subject/Index Terms

• TRT Terms: Benefit cost analysis; Bottlenecks; Departure time; Stochastic processes; Traffic congestion; Travel costs; Travel time; Valuation; Value of time
• Uncontrolled Terms: Travel time reliability; Travel time variability
• Subject Areas: Highways; Planning and Forecasting;

Filing Info

• Accession Number: 01633964
• Record Type: Publication
• Files: TRIS
• Created Date: May 1 2017 9:37AM