How To Estimate The Social Cost Of Transport?
An Italian Case Study
Author(s)
C. Pronello & A. Gaia
Abstract
The valuation of the social cost of transport is an important issue of transport
research. Social cost analyses have been performed for a variety of reasons and
to support a wide range of policy positions but there is not much agreement on
the best method to use to evaluate it in the most accurate way. This paper is
focused on the application of two different methodologies, the contingent
valuation (CV) and the stated choices (SC), comparing them in order to
understand if there are some differences in their estimates and which is the
technique most reliable and accurate. The application of these two different
methods is based on the data collected during a survey carried out in the town of
Alessandria, a medium size city in the north-west of Italy, about 100 km from
Torino. The survey concerns a sample of 690 units and has focused on the
understanding of the whole cost of the town’s mobility as perceived by its
inhabitants. The results of the study show that there is a great difference between
the estimates of the social cost of transport using the two methodologies: the CV
method tends to underestimate the value of the social cost while the SC method
is likely to be more accurate. Further research efforts should be mainly aimed at
understanding how to build up a reliable instrument for the evaluation of the
social cost of transport in terms of both survey design and estimation technique.
Another important topic should be aimed at carrying out comparisons between
estimations obtained using datasets from cities having similar characteristics.
Keywords: social cost of transport, contingent valuation, stated choices.
1 Introduction and objective of the research
In the last decades, several studies have been undertaken to evaluate the total
cost of transport, both in the USA and in Europe. Among those studies, we have
Keywords
social cost of transport, contingent valuation, stated choices.
Related Book
Other papers in this volume
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