Abstract
The purpose of this study is to develop the diagnostic method for repaint of road markings using the stripping ratio (DSR) is calculated from images of road surface taken from a vehicle traveling. A questionnaire survey on appearance (daytime visibility) of road markings was conducted, and then the relation between DSR and the score of examinees, and criterion of DSR for repaint was clarified. In addition, we have proposed the Road Marking Condition Index (RMCI) based on nighttime visibility and appearance, and revealed that repaint section can be reduced by the use of RMCI. Because RMCI can adjust the ratio of nighttime visibility between appearance, road administrators can set up a maintenance level in response to situations such as nighttime road traffic volumes or luminance in road lighting.
