Collisions with Robots (IMAGE) Fraunhofer-Gesellschaft Caption Subjects during the study of biomechanical load thresholds are shown. Credit © Fraunhofer IFF Usage Restrictions The picture may be used for editorial purposes only. It is protected by copyright. The use is free of charge if the reference is mentioned. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.