The Reliability Component in Project Evaluation

The authors discuss here practical issues that arise when wishing to reveal the benefit from improved reliability in the evaluation of a public transport project. Previous studies provide powerful solutions for the demand side of the analysis, whereas on the supply side, no approach is widely accepted. Revealing systematic patterns of travel time fluctuation is most ambitious, but the authors illustrate how some basic findings can be pragmatically used. In addition, combining the outputs from the demand and supply analysis is a stage of the evaluation process which has hardly been dealt with in previous publications. The authors demonstrate how the data restructuring needs of this stage can be tackled. Jointly, the individual tasks presented here form a full procedure for assessing the impact of unreliability within an economic evaluation. The authors illustrate the application of this procedure in the appraisal of the New Generation Transport scheme in Leeds, United Kingdom (UK). Accounting for reliability benefits considerably improves the economic case for this scheme.


  • English

Media Info

  • Media Type: DVD
  • Features: Figures; Maps; References;
  • Pagination: 17p
  • Monograph Title: TRB 89th Annual Meeting Compendium of Papers DVD

Subject/Index Terms

Filing Info

  • Accession Number: 01154852
  • Record Type: Publication
  • Report/Paper Numbers: 10-1801
  • Files: TRIS, TRB
  • Created Date: Jan 25 2010 10:49AM