Influence of Number of Multiple Display Items and Their Positions on Safety Driving (First Report)

- Cognitive Performance and Driving Behavior of Drivers-

Abstract

The authors examined the influence of numbers and positions of Head-Up Display (HUD) items on cognitive performance and driving behavior of drivers using a driving simulator. Participants were asked to detect a target among plural HUD items during their driving. The response time was short in the area of driver's straight looking forward direction including the area of its 3 degrees up and below. The response time became quasi-linearly longer as the number of HUD items increased. Changes in the gas pedal control when drivers were conducting the HUD task were smaller compared to when not conducting the task.