車両運動力学に基づく，車線維持機能の瞬間的な低下の検出法の基礎研究（逆ドライバモデルによる決定論的アプローチ）

抄録

Falling asleep at the wheel often results in crashes. Though how each driver finally reacts varies by driver, it is frequently found that his/her initial dozing off is short and his/her steering is interrupted during this period. Based on this observation, we looked for a way to detect such reduced ability to keep the car continuously in lane. This paper first addresses a method to determine a driver's lane-keeping operation as a numerical formula which represents his/her usual steering maneuver which can be applied as an on-line processing. This paper next shows a method to estimate the expected vehicle's lateral deviation from the center of a lane while the driver is operating the vehicle in a wakeful state. This paper further shows a method for judging whether or not a driver is operating within his wakeful state, by comparing the driver's expected vehicle lateral deviation to his/her actual lateral deviation. This paper finally verifies the usefulness of this approach using a driving simulator.