Abstract
When we evaluate the human-machine-environment systems, it is very important to consider not only the performance of the machine system but also the Mental Work Load (MWL) for the operator. Because human being have a high adaptability to their surroundings, Therefore, we constructed the dynamic model of the human-machine-environment system using the Heart Rate Variability (HRV) in the past. However, It is difficult to construct the dynamic model and also even to analyze it. Therefore, in this research, we deal with possibility of the static model for cause of the MWL using RRI. To use this model, we analyzed the influence of the RRI about driver's information processing using the factor analysis. Finally, it is found that the model has a possibility to show the difference of the driver's information processing according to course.
