DIN EN 50126-2:2018 軌道交通. 可靠性、可用性、可維修性和安全性(RAMS)的規范和驗證. 第2部分: 系統安全方法; 德文版本EN 50126-2-2017
Railway Applications - The Specification and Demonstration of Reliability, Availability, Maintainability and Safety (RAMS) - Part 2: Systems Approach to Safety; German version EN 50126-2:2017