Description: Post office background ambience.

Description: Museum hall background ambience with children.

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

Description: The sound of a metro train passing by.

Description: The sound of metro doors closing and metro departing. Metro interior ambience.

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: Metro train moving - interior background ambience.