Abstract
This study focuses on the effects of the use of interface based on spatial arrangement of warning symbols in a multiple-warning environment. Three subjects drove a motion-based driving simulator in four trials. Each trial included a situation on which the driver was simultaneously exposed to warning symbols of a stationary vehicle and an approaching vehicle in the blind. With regard to driver's eye movement and subjective rating, the results show that the spatially designed interface was effective for collision avoidance. Overall, they support the idea that a spatial arrangement of the warning symbols could be a basis for the design of an interface providing visual warning information.