Eye-tracking study evaluates cognitive load from tunnel geometry and travel direction in drivers.
Objectives Despite the increasing construction of spiral tunnels, the specific scientific problem of how their unique geometric characteristics (length and radius) and travel direction (upward vs. downward) collectively influence drivers' cognitive load remains insufficiently understood, with a lack of systematic quantification using eye movement metrics. This study aimed to evaluate and quantify the cognitive load experienced by drivers navigating spiral tunnels, focusing on addressing this gap by examining the effects of tunnel geometry and travel direction through eye movement metrics.
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Han et al. (2025) studied this question.
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