Effectiveness Analysis on Human-Machine Information Interaction of Intelligent Highway

Table 4

Test evaluation indexes.

Way	Evaluation index	Meaning	Type
Eye tracker	Fixation within AOI	Extraction difficulty of early warning information	Negative index
	Saccade time within AOI	Information complexity of search process	Negative index
	Pupil area	Visual adaptation of driver	Negative index
EEG	Power ratio α/β	Cognitive difficulty of driver	Negative index
	Power ratio θ/α	Subjective relaxation of driver	Negative index
	Power ratio θ/β	Degree of fatigue of driver	Negative index
Driving simulator	Running time	Driving efficiency of driver	Negative index
	Average speed	Driving efficiency of driver	Positive index
	Maximum deceleration amount	Operation stability of driver	Negative index
	Deceleration rate	Deceleration urgency of driver	Negative index
	Mean acceleration	Degree of psychological stress of driver	Negative index
	Speed standard deviation	Degree of external effect on the driver	Negative index
	Lane changing times	Lateral operation stability of driver	Negative index