Put it at the very beginning of a station scene, ahead of any spoken announcement, then cut to the platform or departure board. For a doors-closing beat later in the same edit, follow it with a Bell Ding and keep the announcement voice as the next sound after that.
Über diesen Sound
This is a short, clean two-note electronic alert, a higher ding followed by a lower one, lasting just over a second. It feels calm, official and expectant, like a station pausing before important news. The tone comes from Sydney Trains, the suburban rail network in Sydney, New South Wales, where it plays before platform and onboard announcements.