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Updated: Sep 13, 2025

Usability Evaluation of Augmented Reality: A Neuro-Information-Systems Study
Published on: November 30, 2022
Opacity in car augmented reality head-up displays: users' preferences, visual attention, and situation awareness
Juan Camilo Lopez1, Nadine Marie Moacdieh1
1Carleton University, Ottawa, Canada.
None:
Car augmented-reality heads-up displays (AR-HUDs) superimpose driving information on the outside view. However, there are concerns that AR-HUDs may be distracting and questions remain about how best to present AR-HUD imagery. This study explores people's opinions about AR-HUD opacity and its effects on driver attention and situation awareness. Videos of driving scenes were created and navigation-related AR-HUD imagery was added at different opacity levels. Twenty-seven participants watched these videos while their eye movements were tracked. Participants answered questions related to the opacity of the AR-HUD imagery and to their situation awareness. Results suggest that drivers are ambivalent about AR-HUD opacity, opacity affects how people look at and perceive the roadside environment, opacity levels of 20 % and 60 % both support situation awareness, and the effects of AR-HUD opacity are different for different types of AR-HUD imagery. Thus, AR-HUD opacity levels need to be further investigated to maximize driving safety.
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