Study on Accident-Avoidance Mechanism in Driver-Vehicle System When Activating Level-2 ADAS
摘要
Advanced Driver Assistance Systems (ADAS) in passenger cars, such as Adaptive Cruise Control (ACC) and Lane Keeping Assist (LKA), have recently been widely deployed. However, these systems are not designed for high-risk situations, yet some drivers over trust the system and engage in secondary tasks. These behaviours may lead to serious accidents. On the other hand, it has been reported that the use of ACC reduced approximately half of the collision rate on highways based on public road data. This study aims to clarify the mechanism how ADAS affects driver behaviour and enhances accident prevention performance. Specifically, the focus is on the forward collision risk and the driver’s brake operating behaviour. Through the analysis using a driving simulator, this study compared driver behaviour in high collision risk situations in the case with and without ACC. The analysis of subject drivers’ internal parameters confirmed the driver behaviour that avoided a collision by using ADAS to take over control and brake earlier.