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Motion sickness in self-driving vehicles

Motion sickness is expected to be more of an issue in self - driving vehicles than in conventional vehicles. The reason is that the three main factors contributing to motion sickness ( conflict between vestibular and visual input s , inability to anticipate the direction of motion, and lack of control over the direction of motion) are elevat ed in self - driving vehicles. However, the frequency and severity of motion sickness is influenced by the activity that one would be involved in instead of driving. This report calculates the expected frequency and severity of motion sickness in fully self - driving vehicles based on the expected frequencies of different activities from a recent survey of what individuals would be likely to do in a fully self - driving vehicle — a survey performed in the U.S., China, India, Japan, the U.K., and Australia. T he results indicate that, for example, 6 % - 10 % of American adults riding in fully self - driving vehicle s would be expected to often, usually , or always experience some level of motion sickness. Analogously, 6 % - 1 2 % of American adults riding in fully self - dri ving vehicles would be expected to experience moderate or severe motion sickness at some time. Calculations for the other five countries are also presented. The report concludes with a discussion of ways to minimize the frequency and severity of motion sickness in self - driving vehicles.