【摘要】 戈壁地区公路具有气候干旱、环境单调、地形地物对公路选线影响小、直线线形长、交通量小等特性,是驾驶疲劳累积的外部原因。为探求驾驶疲劳累积规律,基于实际驾驶试验,获得了驾驶员注视持续时间、眨眼频率和眼跳频率等眼动指标,发现其服从对数正态分布,并随驾驶时间变化呈现"稳定波动-阶段性大振幅波动"的趋势,证实了基于驾驶模拟器研究成果的局限性。眼动特征与驾驶行为观测相结合,界定了驾驶疲劳状态,确定戈壁公路最大直线安全长度阈值不宜超过15km。更多还原

【Abstract】 In Gobi desert,dry climate,monotonous environment,long straight line and low traffic volume are external causes of fatigue driving.To explore the rules of fatigue driving accumulation,driversfixations duration,blinks frequency and saccades frequency are obtained through the field driving test.It is found that fatigue driving rules obey the lognormal distribution,and present a trend of"stable wavingphased large amplitude fluctuations"which proves the limitation of the research results based on the driving simulator.Combining with drivers eyes movement features and driving behavior,the driving fatigue status is defined,and it is drawn that the largest straight length of highway in desert should not exceed 15 km.更多还原