Bobsled Runs -- Fast and Yet Safe (IMAGE) Fraunhofer-Gesellschaft Caption The friction levels of runners can now be measured accurately: top right, the measuring setup with runner and sensor in the ice channel; below right, various types of runner: (left to right) bob, skeleton and luge. Credit Frauenhofer IWM 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.