The aim of this study is to present the relative evaluation method on unevenness of floor and road surfaces from the viewpoint of stability of footing in case of limiting locations stepped on uneveuness. First, to make the psychological scales about stability, sensory tests were taken place. Next, the method to measure the physical value of unevenness which corresponded to the psychological scales was developed. Finally, the evaluation indexes which were composed of the psychological scales and the physical values, and the method to measure the physical values were presented as the relative evaluation method.
