Development of In-Vehicle Information Dissemination Mechanisms to Reduce Cognitive Burden in the Information-Rich Driving Environment
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2022-06-01
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Edition:Final Report. 8/15/2017 - 12/31/2020
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Abstract:The diversity and complexity of real-time travel information provided en route to drivers has steadily increased over the years. While it generally has positive impacts by enabling drivers to make more informed travel choices with confidence, several studies have reported the possible negative implications of poorly-designed information delivery systems. The key reason for this underlying ineffectiveness is the lack of adequate consideration of human and psychological factors in real-time information design and its delivery. This study measures drivers’ brain electrical activity patterns to evaluate driver cognition under real-time information provision using insights on the localization of brain functions from the neuroscience domain. The brain electrical activity patterns of 84 participants are collected using an electroencephalogram (EEG) in an interactive driving simulator environment. The impacts of real-time auditory travel information characteristics (amount and content) and different time stages of interaction with information provision (before, during and after) on the frequency band powers of EEG signals in different brain regions are analyzed using linear mixed models. Study results illustrate that drivers exert more cognitive effort to perceive and process real-time information on complex routes in terms of the road environment and traffic interactions. Further, insufficient real-time travel information may evoke increased attention to internal processing and memory retrieval on routes characterized by higher travel time uncertainty. Also, driver anxiety may increase due to information recommending switch to routes with higher travel time uncertainty and complex driving environment. The study findings can aid information providers, both private and public, as well as auto manufacturers to incorporate driver cognition and psychology in designing real-time information and their delivery systems.
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