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Driver engagement in partial driving automation: Mediating pathways of personality and driving style through trust in
1Department of Metaverse & Game, Soonchunhyang University, Asan, Republic of Korea.
Objectives:
To examine how trust influences intention to use partial driving automation through TAM beliefs, and to examine how personality traits and driving styles influence trust and intention indirectly through these mechanisms. These mechanisms are relevant to safe engagement and traffic injury prevention by reducing misuse and disuse of partial automation.
Methods:
An offline, in-person survey was conducted in Korean with 600 licensed drivers who had experience using commercially available SAE Level 2 or Level 3 functions. A latent-variable structural equation model tested the hypothesized mediation pathways, with indirect effects decomposed from the model.
Results:
Attitude mediated the effects of perceived usefulness and perceived ease of use on intention to use, and trust affected intention indirectly through attitude and usefulness rather than directly. The model accounted for 72.1% of the variance in intention. Personality and three driving-style dimensions influenced trust and intention indirectly through the sequential cascade, with all constituent structural paths significant.
Conclusions:
Integrating trust and individual differences into acceptance models helps explain heterogeneity in engagement with partial automation and informs design and communication strategies to calibrate trust for safe use. Trust-calibrating interventions may help mitigate misuse-related crash and injury risk.
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