Whether at sea, on the road, in the air, or in space - certain movements and activities over a period of time make many people complain of dizziness, cold sweats, nausea, and headache. They suffer from travel or motion sickness. In a study conducted by the Charité, over 40 percent of 500 respondents said they had at least once experienced symptoms of the condition during a car ride. Kinetosis, to use the technical term, is more common in children than in adults. In addition, passengers engaged in occupations such as reading are more likely to experience the phenomenon than drivers. Accordingly, kinetosis can, to a considerable extent, negatively affect the available space and freedom to move in a car made possible through automated driving.
The scientists are now investigating how kinetosis comes about and how it can be reduced in automated driving. They want to find out how to avoid the condition by installing technical measures such as an active chassis or active seats. The car should recognize at an early stage when a person develops symptoms of kinetosis and initiate appropriate countermeasures. It could then recommend a change in the driving style or the suspension characteristics or propose a break.
“New insights into how to reduce motion sickness through vehicle or medical intervention will help increase the acceptance and benefits of automated driving," says Steffen Müller, head of the Department of Automotive Engineering of Technische Universität Berlin and head of the research project.
Dr. Uwe Schönfeld from the Department of Otolaryngology at the Charité Benjamin Franklin campus and head of the Charité subproject adds: "We want to understand the causes responsible for the widespread sensitivity to kinetosis. Specifically, we will categorize study participants regarding their predisposition to motion sickness and collect physiological data on the function of the balance organs in the inner ear.“ Among other things, this will be examined by means of a special rotating chair. The participants' facial expressions are examined and analyzed by video in order to identify patterns for symptoms of motion sickness. In addition, volunteers are exposed to driving situations with a risk of kinetosis in test vehicles set up for the research project. Subsequently, the biological interdependencies are mapped in a simulation model.
The joint project of TU Berlin and Charité pursues an interdisciplinary approach. Both partners are thus further expanding their collaboration in research. The researchers hope that their scientific findings will be used by automotive companies to implement these functions and systems in their products in order to prevent travel sickness.