Evaluation Experiment on Information Signs in the Roundabout Ring Road Considering the Clarification of an Exit Order

Abstract

This study aims to analyze the effect of road signs and road markings displaying the sequential Roman numerals on the reduction of confusion of drivers by experimental test using a driving simulator, in order to solve the problems, which is considered as one of the issues to install a roundabout, such as loss of sense of direction and difficulty of recognition of exit tract. There is a significant difference between the current and improved plan in the average of the 5 rank subjective evaluation value evaluating the confusion of drivers in driving ring road of roundabout, which shows the effect of proposed signs and road markings on the reduction of confusion of drivers in driving ring road of roundabout. On the other hand, by the analysis using an eye mark recorder, the possibility is pointed out that the proposed treatment raises a proportion of gaze to the road signs and markings and attention forward is lost.