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Abstract
A vehicle head-up display (HUD) has a semitransparent property that utilizes a method of projecting light onto the windshield. The semitransparent characteristic of the HUD generates continuous superimposition between the “HUD graphic” and “road environment events.” This study aims to determine the effects of HUD use on elderly driving. Two age groups (elderly, younger) performed tasks (speed monitoring, navigation) utilizing two types of display (HUD, head-down display) in two different circumstances (high superimposition level, low superimposition level). Subject performance was evaluated by having the subjects execute a secondary display task while performing a primary driving task with an eye-tracking task. In addition, the degree of driver visual distraction was verified through the measurement of display glance duration. The results showed that an increase in superimposition negatively affected driver glance duration independent of age. However, the use of HUD in low superimposition situations showed relative advantages with regard to display use independent of age. This study confirmed that the negative effects of HUD use need to be considered during the selection of HUD information and display location. In particular, this study verifies that special attention should be given to the negative effects of superimposition of text information for use by an elderly population.
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Notes on contributors
Hyung Jun Oh
Hyung Jun Oh received a master’s degree from the Department of Information and Industrial Engineering at Yonsei University, Korea, in 2014. His research interests include human–computer interaction, user experience, user interface design, product/system usability and evaluation, and mental models.
Sang Min Ko
Sang Min Ko is a PhD student in the Department of Information and Industrial Engineering at Yonsei University, Korea. His research interests include haptic interface, multisensory interaction, eye-tracking, augmented reality, and self-driving cars in human–computer interaction.
Yong Gu Ji
Yong Gu Ji is a professor in the Department of Information and Industrial Engineering at Yonsei University, where he directs the Interaction Design Laboratory. He received his PhD in Industrial Engineering from Purdue University. His research interests include usability, emotional design, accessibility, and the elderly in human–computer interaction.