In Switzerland exists a substantial willingness to pay for increases in the reliability of transport systems. These benefits have to take into account in evaluations. This study is looking for a procedure to describe and to measure the benefits of reliability improving projects and how to evaluate them.
This research work will focus on:
- willingness-to-pay for increasing reliability by stated response surveys,
- probability distributions of travel time for single links and for the journey from door to door,
- recommendations for approximations, including easy to handle tables, which should be used in daily traffic planning
The results are differentiated by trip route/net characteristic and the kind of measures undertaken.
The developed procedure can be used as a detailed norm for the general Cost-Benefit-Analysis-Norm (work in progress).
1. System delimitation.
2. Determination of probability distributions and functions for stages / routes.
3. Model for determining the effects of measures.
4. Surveys to determine willingness to pay.
Result is applicable for traffic planning practice recommendation for action to determine the measures related change of reliability and their evaluation in the context of cost-benefit studies.