Study on evacuation decision and wayfinding behavior based on eye tracking characteristics

doi:10.16265/j.cnki.issn1003-3033.2023.03.0553

Abstract

Abstract:

In order to explore the characteristics of individual risk-based decision-making behavior in the evacuation process and the influence of channel structure on evacuation behavior, simulated evacuation experiments with scoring and reward rules were conducted. The evacuees made continuous decisions based on the evacuation tasks of the computer terminal and the underground garage, respectively. The evacuees' eye movement parameters were collected using eye tracking technology. The evacuees' visual distribution and perception characteristics were characterized by gaze duration, fixation times and other data. Combined with the statistical results of risky behaviors in decision-making, the change characteristics of decision-making behaviors of subjects facing risks in the evacuation process and the influence of path characteristics on wayfinding behaviors were analyzed. The results show that when risky decision-making tasks appear continuously in the simulated evacuation, with physical exhaustion, participants are more inclined to choose the safe road. The proportion of risk-seeking behaviors increases when subjects feel that they are approaching the exit. The evacuees pay more attention to the key information of the first perception or potential target, which influences evacuation decision-making behavior. Compared with the flat and straight path, the subjects' gaze time increases by 4-6 times at the sudden change of the passage, such as the fire gate area, rugged paths, and irregular angles, and show more hesitation and turning back behaviors.

Key words: eye movement characteristics, evacuation decision, wayfinding behavior, underground building, emergency evacuation, risky based decision-making

DING Tianqi, WANG Shu, WEI Yixuan, XU Yifei, JIN Longzhe. Study on evacuation decision and wayfinding behavior based on eye tracking characteristics[J]. China Safety Science Journal, 2023, 33(3): 174-180.

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特征	类别	人数	比例/%
年龄/岁	≤20	10	38.46
年龄/岁	21~44	16	61.54
是否经历过突发事件	是	2	7.69
是否经历过突发事件	否	24	92.31
是否有应急疏散(演练)经历	是	16	61.54
是否有应急疏散(演练)经历	否	10	38.46