本研究為探討駕駛在注意力集中與分散情形下，對駕駛負荷產生之影響。實驗藉由駕駛模擬器及眼動儀，了解眼動反應與負荷之關係，觀察駕駛遇到突發路況(行人橫越、皮球滾入、道路施工及路樹傾倒)的眼球軌跡，並進行NASA-TLX負荷評量。結果發現專心及分心情況，僅對至第一次凝視所需時間(TFF)有顯著之差異，專心時，駕駛視覺搜索反應較快，且各路況均無顯著差異；而分心時，行人橫越之反應時間最長，路樹傾倒發現時間最短。另在凝視次數(FC)上，專心時之總凝視次數顯著少於分心，代表分心時必須進行更多次注視以提升狀況判斷準確性。而在NASA-TLX負荷方面，分心時之負荷明並未顯著高於專心，本研究證實專心/分心對於駕駛路況反應之影響，藉此結果可提供相關管理單位政策頒定之參考。

This study employed driving simulation and eye tracking to explore the relation between situational workload and eye movements of drivers under attentive and inattentive conditions. There are 8 subjects participated in this study, all of whom were required to hold a valid driver’s license. The independent variables were concentration (attentive, inattentive) and road conditions (pedestrians crossing, balls appearing, road work, andinverted tree). The dependent variables included Time to First Fixation (TFF)(ms), First Fixation Duration (FFD) (ms), Total Fixation Duration (TFD) (ms), Fixation Count (FC) (frequency), and subjective measures (NASA-TLX).Results showed that under attentive conditions, drivers are more aware of road conditions, resulting in shorter TFF with resulting fewer FC and lower NASA-TLX. The influence of road conditions on eye movements and workload varied according to the situation.