Fatigue measurement of driving activity on male motorcycle drivers based on cognitive, physiological, and subjective approaches

Driver fatigue is one of the major causes of serious road accidents. The purpose of this research is to measure the effect of cognitive, physiological, and subjective approaches towards fatigue, while driving a motorcycle for 2 hours. Another objective of this research is to determine the differences in the level of fatigue in the studied age category. In this study, there were two age categories, namely the productive age category (16-35 years old) and the adult age category (35-60 years old). This research implemented three approaches: cognitive, physiological, and subjective. In the cognitive approach, levels of concentration and stress (tension) were measured by using Design Tools, such as Simple Reaction Time and Stroop Test. In the physiological approach, two measurements were taken: measurement of heart rate using Polar Heart Rate and measurement of blood pressure (systole and diastole) using the Omron Blood Pressure test. Meanwhile, the subjective approach was calculated using the 9-scale Karolinska Sleepiness Scale (KSS). Also, the correlation between the subjective approach and two other approaches (cognitive and physiological) used the Spearman-Rank test. Results obtained from this study on the influence of heart rate on the level of fatigue are significantly found in both age categories (productive and adult age category). Meanwhile, the significance (influence) of blood pressure on the level of fatigue is found only in the adult age category. Simple Reaction Time measurement results were found to be significant on the level of fatigue in the adult age category. Thus, it can be said that in the adult age category, there is a significant influence between the level of fatigue and concentration level.