Disclosed is a driver condition detecting device and a driver condition informing device detecting inattentive or incursive driving by analysing movements of a head and eyeball of a driver during driving. When the head and the eyeball of the driver are determined not to be facing forward and the vestibulo ocular reflex movement is not detected, a CPU recognises inattentive driving and informs the driver. Furthermore, even though the head and the eyes of the driver are determined as facing forward, inattentive driving is detected by the CPU when the angle-of-convergence of the eye with respect to a forward direction lies above a threshold (i.e. the driver is looking away from the road).
DRIVER ALERTNESS DETECTING DEVICE AND DRIVER ALERTNESS INFORMING DEVICE