Stated Preference Method - a Useful Tool in Traffic Safety Research?



Stated Preference Method - a Useful Tool in Traffic Safety Research?

Authors

RYENG E O, The Norwegian Univel'sity of Science and Technology, Norway

Description

During the last twenty years, Stated Preference method has become an important research tool within the field of transportation. This method has a lot of qualities. Among these qualities are the possibilities to use experimental design to control the vari

Abstract

During the last twenty years, Stated Preference method has become an important research tool within the field of transportation. This method has a lot of qualities. Among these qualities are the possibilities to use experimental design to control the variables and to estimate the isolated effect of each variable, and of great importance the possibility to evaluate measures not yet implemented.

A major pact of traffic safety research is focused on estimation and prediction of traffic safety effects. Both effects of implemented measures, unimplemented measures, as well as possible traffic safety effects of other measures, e.q. measures to improve traffic flow, are of interest. This paper is based on a doctoral-thesis (Ryeng, 1998) discussing('traffic safety effects resulting from changes in the traffic system. The main r@search question .of this thesis is: Can SP-method be used for estimation and prediction of behawoural changes affecting safety and thus be a suitable tool in traffic safety research?

In this paper the term Stated Preference method is used in the same meaning as "Stated preference techniques" (Permain et.al, 1991); similar to the term "ConjOint analysis". The term includes techniques used for design, data- collection and analysis.

Publisher

Association for European Transport