How is the opening and closing of the train doors indicated?
The status of the doors is communicated through visual and acoustic signals to ensure that it is perceptible to everyone.
When does the acoustic closing warning sound?
– It starts approximately 2 seconds before the door closes
– It continues throughout the entire closing process
– It stops when the door is completely closed and locked
Is the sound the same in all cases?
It depends on how the door is closed:
– If the driver closes it → the sound is emitted through the train’s public address system.
– If it is closed using the door button → the sound comes from the door’s local buzzer.
