Road dependent driver eye movements under real driving conditions by electrooculography

Electrooculography (EOG) as a tool to measure the driver eye movements allows us to distinguish between drowsiness- or distraction-related and driving situation dependent eye movements. Thus, an experiment under fully controlled conditions is carried out to study the relationship between driver eye movements and different real driving scenarios. In this experiment, unwanted head vibrations within EOG signals and the sawtooth pattern (optokinetic nystagmus, OKN) of eyes are realized as situation dependent eye movements. The former occurs due to ground excitation and the latter during small radius (50m) curve negotiation. The statistical investigation expresses a significant variation of EOG due to unwanted head vibrations. Moreover, an analytical model is developed to explain the possible relationship of OKN and tangent point of the curve. The developed model is validated against the real data on a high curvature track.