Editing Gong (section)

=== Railcar mounted ===
Gongs are present on [[rail vehicle]]s, such as trams, [[streetcar]]s, trains, [[Cable car (railway)|cable cars]] or [[light rail]] trains, in the form of a bowl-shaped signal bell typically mounted on the front of the leading car. It was designed to be sounded to act as a warning in areas where [[Train whistle|whistles]] and [[Train horn|horns]] are prohibited, and the "''clang'' of the trolley" refers to this sound. Traditionally, the gong was operated by a foot pedal, but is nowadays controlled by a button mounted on the driving panel. Early trams had a smaller gong with a bell pull mounted by the rear door of these railcars. This was operated by the [[Conductor (transportation)|conductor]] to notify the [[Motorman (locomotive)|driver]] that it is safe to proceed.