Abstract
In this paper, a covariance structure model and contingent valuation method (CVM) are presented to analysis the benefit evaluation and prioritization of renewal works of rest facilities on expressway. This study proposed a methodology to valuate the optional functions and the benefits demanded from rest facilities on expressway using a covariance structure model and CVM. Some basic functions as a washroom and the optional functions are expressed as structure concepts, and the relationship between observed variables, which are obtained by questionnaire survey to user, and structural concepts. As a result, the preference in the washroom in each rest facility corresponding to user's characteristic was calculated by clarifying the user needs for the washroom in the rest facility. In addition, the structural concepts are used as explanatory variables of utility function and the benefit of the function improvement of the rest facility was measured from the WTP of the user who acquired it by the questionnaire survey. The practical availability of the methodology presented in this paper is investigated by a case study dealing with the washroom renewal in rest facilities in expressway.
