ISO 2631-1, which defines methods for the measurement and evaluation of human exposure to whole-body vibration, describes factors contributing to the discomfort from vibration. However, investigations of the effect of sound and visual images on whole-body vibration are necessary to evaluate ride comfort truly. Then, we developed a new driving simulator to realize virtual driving easily. This paper reports the psychometric experiments with various conditions of vibration and audiovisual stimulation. For evaluation of whole-body vibration, we used the category judgment method. We discussed the relationship between the stimulation condition and subjects' assessment.