Methods for measuring and evaluating the reliability of traffic systems (SVI2002/002)
Overview
Background & policy context:
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.
Objectives:
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).
Methodology:
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.
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