LST EN 15327-1-2009 Railway applications - Passenger alarm subsystem - Part 1: General requirements and passenger interface for the passenger emergency brake system
2014LST EN 16334-2014 Railway applications - Passenger Alarm System - System requirements
2009LST EN 15327-1-2009 Railway applications - Passenger alarm subsystem - Part 1: General requirements and passenger interface for the passenger emergency brake system