Effects Of Perceptual Load And Fatigue On Driver Inattentional Blindness

Driver "inattentional blindness" refers to the phenomenon that when drivers are driving,because they are focused on the operation or event related to driving,they are unable to detect significant,unusual or dangerous targets,which poses a great threat to road traffic safety.The salience of unexpected events,psychological load,attentional set and processing ability are the four major factors affecting inattentional blindness.Previous studies have mainly discussed the impact of single factors,such as the salience of unexpected stimuli and psychological load,on inattentional blindness,and the subjects are mostly college students.Therefore,in order to explore the factors affecting drivers’ inattentional blindness,the following three studies were designed:The study 1,32 college students with driving experience were selected and divided into two groups,high and low perceived load,with 16 people in each group.The open driving simulator was used to simulate driving,so as to test whether there is any difference in the influence of perceived load level on drivers’ inattentional blindness.The results showed that the detection rate of undesired stimulus in the high perceived load group was significantly lower than that in the low perceived load group.The Study 2,To investigate whether the pilot inattentional blindness is affected by fatigue,select 32 driving experience of college students,divided into fatigue with the group,each group of 16 people,through the open simulator driving operation,the fatigue group of participants to pass the driving time and subjective fatigue rating scale for both,examine the driver inattentional blindness is affected by the state of fatigue.Difference in the effect of fatigue on driver inattentional blindness.The results showed that the incidence of inattentional blindness in the fatigue group was significantly higher than that in the non-fatigue group.Study 3: The perceptual load and fatigue types were combined to study whether the two together had an impact on drivers’ inattentional blindness.Eighty college students with driving experience were selected,with 20 people in each group.Two factors,2(perceptual load: high and low)×2(fatigue type: physical fatigue and psychological fatigue),were used in the intertest design.An open driving simulator was used to simulate driving.The results showed that :(1)perceptual load had a significant effect on drivers’ inattentional blindness.Compared with high perceptual load,drivers with low perceptual load had a lower incidence of inattentional blindness under both physiological and psychological fatigue conditions.(2)There is no significant difference in the influence of fatigue type on the awareness rate of drivers.In conclusion,both perceptual load and fatigue have significant effects on drivers’ inattentional blindness.The detection rate of undesired stimuli in the high perceptual load group is significantly lower than that in the low perceptual load group.The incidence of inattentional blindness in fatigue group was significantly higher than that in non-fatigue group.There is no significant difference between mental fatigue and physiological fatigue in the effect of driver inattentional blindness.