COMPREHENSIVE EVALUATION OF FREEWAY SURFACE CONDITIONS BASED ON USER'S SATISFACTION

Abstract

A road generally has a variety of characteristics and there are several elements which diversly affect the traffic safety and pleasantness and service expenses, etc. in time of operation. Among several elements, the evenness indicating the condition of a road surface not only operates as a determinant controlling a rough or smooth ride but it also gives a considerable effect on safety concerns.
This research is aimed at comprehensively evaluating the condition of a road surface of a highway in consideration of its users. This research conducted an overall evaluation of a road surface condition by adding qualitative data, or a driver's evenness to the existing quantitative elements, whereas the existing research put its focus on a correlation analysis with quantitative factors and qualitative factors through a statistical method.
As for an evaluation method, this research conducted an overall evaluation by using Gray System Theory which makes possible an integrated evaluation.
The analyzed data on the influence of data value observed by comprehensively evaluating a variety of elements could be used as a secondary means of the decision-making process in relation to road maintenance.