High-Tech For Safe Rails (1 of 2) (image) Fraunhofer-Gesellschaft Caption Using energy self-sufficient sensor nodes, the condition of safety-critical components can be monitored on a continuous basis. Credit Fraunhofer LBF 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. 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.