Maybe a bit late for JulieM's use, but two other expressions I remember from the recorded announcements in the Moscow Metro:

Уважаемые пассажиры... "Dear passengers..." (This was sometimes used at the beginning of certain messages, before instructing the "dear passengers" to do whatever.)

Станция [fill in name of station], конечная. Поезд дальше не идет, просьба освободить вагоны. "Such-and-such station, end of the line. The train is now out of service, please exit the cars."