2019DIN EN 16334/A1:2019 Railway applications - Passenger Alarm System - Part 1: System requirements for mainline rail; German and English version EN 16334:2014/prA1:2019
2014DIN EN 16334:2014 Railway applications - Passenger Alarm System - System requirements; German version EN 16334:2014
1970DIN EN 16334 E:2011-10 Railway applications - Passenger Alarm System - System requirements