Driver Behavior When Installing with Two Different Driving Support Functions

Abstract

We investigated whether excessive dependence on the system occurs and whether the difficulty for recognizing each alarm function occurs when a vehicle was equipped with two driving support alarm systems compared with a single driving support alarm system, using a driving simulator. When the different sound was used for each alarm system and each alarm sound was designed in consideration of drivers' mental model related to the collision to the preceding car or lane deviation, the braking or steering reaction time to alarms was not prolonged and the risk-avoidance behavior did not worsen when two alarm systems were used, compared with a single alarm.