Division 4.2.12 Emergency alarm

Passenger areas on high-speed trains shall be fitted with emergency signal devices conforming to the following provisions:

• emergency handle to activate the continuous brake must be installed in coaches where they can be easily seen and reached by passengers without having to pass through an interior door. The emergency handle must be clearly indicated by easily understood logos and instructions enabling passengers to use it without difficulty.

  The emergency handle must have a clearly visible seal prior to passenger use.

  The alarm once activated shall not be capable of being disengaged by passengers. If a device is provided to indicate that the alarm has been activated it should be marked as indicated in Annex Q to this TSI.

Operation of the emergency signal shall be indicated next to the device used.

Activating the alarm shall:

• initiate braking,

• cause a visual (flashing light) and acoustic (buzzer/klaxon) alarm to be triggered in the driver's cab,

• transmit a message (acoustic or visual signal) to the train crew working among the passengers,

• transmit an acknowledgement, recognisable by the person who triggered the signal (acoustic signal in the vehicle, braking application, etc.).

In all cases, the arrangements installed in the rolling stock (automatic brake application, in particular) shall allow the driver to intervene in the braking process so as to be able to choose the stopping point of the train, or start again immediately if the train has stopped. For this purpose, activation of one or more other alarms shall have no further effect, whilst the train-crew has not re-armed the first.

Lastly a connection between cab and train shall enable the driver, at his or her initiative, to investigate the reasons why the emergency signal was triggered.