Abstract
It is necessary to transmit guide information to the driver exactly because the network shape of the urban expressway has been complicated. Therefore, the contents and the designs of information signs and road displays have been examined, but an enough examination is not necessarily executed for these arrangements. In this study, the method of arranging the information sign and the road display with high effect of the information transmission to the driver based on the results of the laboratory test using a driving simulator. We obtained the finding that the information sign has a high effect of the information transmission and that the effect of the information transmission improves by arranging the road display two or more times. On the other hand, it becomes clear that the gaze time of the information sign is limited when a high car exists forward, and the annoyingness under running increases.
