Effects of display arrangement for multiple-warning environment of in-vehicle information systems on driving performance

In order to provide several information to a driver appropriately, it is necessary to establish a method of presenting information. This study deals with the case that both headway warning information and blind-spot warning information are displayed to the drivers simultaneously. The aim of this study is to clarify whether it is effective for a driver to arrange the location of displays spatially. In this experiment, a driving simulator was utilized and it was investigated how the driver´s behavior, eye movement and subjective rating were influenced by the types of display arrangement. The results showed that drivers could understand such warning information easily based on a certain display arrangement, although it was observed that the effect of the display arrangement was dependent on the direction of lane change.