Car sickness often causes dizziness and discomfort that lasts for several days, accompanied by vomiting and headaches. Countermeasures and symptoms have been studied from various perspectives, but there are no comprehensive and unique countermeasures. In this study, data on motion sickness were taken from a random sample of drivers and passengers in a car. This study proposed a new measure to prevent motion sickness that does not depend on the performance of the car, and clarified that the rapid rotational movement of the head that occurs in the car is considered to be one of the causes of kinetosis.