doors closing

• shuttingMoving to closed position
• slamForceful impact or closure
• clickBrief sharp noise
• latchDoor-securing catch
• thresholdPoint of beginning

elevator · subway · closing time · goodbye · ending · opportunity · finality · lock · handle · hinges · whoosh · seal · automatic · revolving · exit · trapped · locked out · announcement

• transit announcementsnext stop, mind the gap, stand clear, final stop, end of line
• train soundschoo-choo, chug, chugging, clickety-clack, clack