Abstract
Hazard detection refers to the ability of detecting potential hazards on the road. Although many studies have found that experienced drivers outperformed novice drivers on hazard detection in computer-based hazard perception test, some studies have not found such differences. Furthermore, some researchers have attempted to find the relationship between drivers’ response time to the hazards with their sensitivity and response criteria, but with mixed results. Some studies found that drivers’ slower response time to the hazards was due to their low sensitivity while others found that it was strict response criteria that resulted in slower response. Given hazard type was a key factor in hazard perception; it might be an underlying factor that accounts for the inconsistency in previous studies. Additionally, the effects of hazard types on drivers’ sensitivity or/and response criteria have not been largely explored. Thus, the present study aimed to examine the effects of driving experience and hazard types on response time, sensitivity and response criteria and to reveal their relationships under different hazard types.
A 2×2 mixed experiment design was employed with driving experience as the between- group factor and hazard types as the within-group factor. Thirty-five novice drivers and 35 experienced drivers were asked to complete a hazard perception task where they were instructed to click the left mouse button quickly when they detect a hazard. Then, participants were asked to finish a signal detection task where they were asked to report orally whether the video clips contained a hazard or not before it was blacked out at a certain point. Hazards in the video clips were classified into overt hazards and covert hazards according to the visibility during their materialization. Sixty video clips were used in the present study and 40 video clips contained either a covert hazard or an overt hazard.
The results revealed that experience-related advantage was found on hazard detection. Drivers who had more driving experience responded faster to the hazards, and were more likely to distinguish the hazards and identify what they saw as true hazards. Hazard types did play an important role in hazard detection. Drivers detected overt hazards faster than covert hazards. Furthermore, hazard types affected the relationship between drivers’ sensitivities, response criteria and their response time. Negative correlation was found between drivers’ sensitivity on overt hazard and their response time. Such relationship was not found on covert hazards. Drivers’ response criteria correlated positively and significantly with their response time, regardless of hazard types. Regression analysis showed that drivers’ slower response time to the hazards was due to their strict response criteria rather than their low sensitivities.
The present study found hazard type partially determined drivers’ detection of the hazards in the video clips. The findings provided a better understanding for the phenomenon of why novice drivers detected some particular hazards slower than experienced drivers and provided more evidence for the application of signal detection theory in explaining experience-related differences in hazard detection.
Key words
hazard detection /
hazard type /
response time /
signal detection theory
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Effects of Driving Experience and Hazard Types on Hazard Detection[J]. Journal of Psychological Science. 2019, 42(6): 1455-1461
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