Abstract
Three factors are involved in car accidents: the road, the vehicle, and the driver. Of these, the first two have recently received considerable attention; the third factor, the driver behind the wheel, is probably the most important. Attention is paid to the last two factors. The present study characterizes low vigilance periods relative to driver's drowsiness by simultaneous analysis of the recorded electroencephalogram (EEG), steering wheel movements, and vehicle speed signals during six hours driving period. The mechanical parameter thresholds ot the vehicle are discussed. (A)