DIN EN 16704-2-1-2017 轨道交通. 轨道. 轨道工作期间的安全保护. 第2-1部分: 常见解决方案和技术. 轨道预警系统(TWS)的技术要求; 德文版本EN 16704-2-1-2016
Railway applications - Track - Safety protection on the track during work - Part 2-1: Common solutions and technologies - Technical requirements for Track Warning Systems (TWS); German version EN 16704-2-1:2016