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

- Brake Operation and Eye Movement of Drivers -

Abstract

Using a driving simulator, authors examined the influence of conducting the Head-Up Display (HUD) task on a driver's brake response time to the unexpectedly lit stop lamps of the leading vehicle. The HUD task was to detect a target item among displayed plural HUD items. The brake response time during conducting the HUD task was longer compared to that without the HUD task, however the number of HUD items did not almost affect the brake response time. The result of the eye tracking data showed that participants might try to observe the leading vehicle while they were searching for the target item.