Description: Metro train pulls in and comes to a stop.

Description: The sound of a metro train passing by.

Description: The sound of a metro train departing (w/air brake release hiss).

Description: The sound of a metro train crossing an intersection (with a railroad crossing bell sound).

Description: The sound of a metro train crossing an intersection (with a railroad crossing bell sound).

Description: Aircraft lavatory flushing (suction sound).

Description: Aircraft lavatory flushing (suction sound).

Description: Airplane cabin ambience. Passengers getting to their seats.