高齡駕駛為人口結構改變所衍生的現象之一，弱化的生心理使他們較容易發生交通事故。抬頭顯示器(以下稱HUD)為一項幫助駕駛人獲得車輛相關資訊的儀表，比傳統儀表更為優秀，高齡駕駛人應能從HUD的使用中獲得一定程度的輔助效果。然而，一些研究指出HUD有認知方面的問題，以及它的顯示位置可能易造成使用者某種程度上的分心。
由於聽覺為獲取駕駛資訊的來源管道之一，它讓駕駛人有不必移轉視線就能獲取資訊的好處。因此，一些研究曾探討了不同資訊管道的使用影響，儘管相關的研究對於以聽覺傳遞資訊有正面的評價，但結果卻有差異。因此本研究欲了解不同認知模式的資訊介面對高齡者的影響，探討高齡者合適於何種顯示模式的抬頭顯示器。
本研究共招募富有駕駛經驗的高齡與年輕共兩種族群，各12名、共24名的受測者於室內進行實驗，並建立一個有三種認知模式顯示的互動選單系統，分別為視覺、聽覺與視聽覺。受測者被要求在各介面下操作兩種對記憶需索程度不同的任務，同時保持車輛駕駛作業，過程中蒐集了在各介面下的工作負荷與任務錯誤數，並在最後進行簡短訪談。
結果顯示，兩個年齡族群在三個介面下的工作負荷差不多，以聽覺介面的影響最大，而其它兩個介面之間則無相異。在任務錯誤部份，年輕族群在三個介面下的結果相同，而高齡族群則在聽覺介面下獲得的錯誤數明顯高於其它兩個介面。根據訪談調查結果瞭解，三種介面皆對受測者帶來高程度的影響，特別是聽覺介面。本研究結果認為，未來的HUD資訊系統可考慮以視覺或視聽覺設計建立，但更重要的是，應考量到高齡者的行為模式和限制。

Head up display (HUD) is an increasingly popular and ideal information instrument of a car, which makes it faster for the driver to capture information than a traditional instrument while paying attention to the road condition ahead. However, function weakening and related cognitive problems might cause some trouble to the use by elderly drivers. Therefore, the present research aims to study the impacts of information interfaces with different cognitive modes on the elderly drivers and explore which display mode of HUD is suitable for them. The experiment recruits elderly and younger subjects under two groups and requires them to independently operate tasks of two difficulty levels under the three kinds of cognitive modes, namely, visual, audio, and visual/audio. In the course, their work load and number of mistakes under each interface are collected and finally a brief interview is made. The results indicate that the two groups have no big difference in work load under the three interfaces, and the impact of visual interface is the most prominent and the impacts of the visual interface and visual/audio interface have no big difference. With regard to mistakes, the younger group has witnessed an identical result under three interfaces, while the elderly group has made significantly more mistakes under the audio interface than under the other two interfaces, but no difference between visual interface and visual/audio interface. According to the result of interview and survey, the three interfaces have brought a high impact to the subjects, especially the audio interface. Overall, the information system of HUD can be designed based on visual or visual/audio, but more importantly, it should pay attention to the behavioral pattern and limitation of the elderly.

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