platform screen door; platform edge door; automatic platform gate
Railway term for safety barriers installed at station platforms that open and close in sync with train doors.
from English (plat)form door
See also: ホーム
Platform screen doors are installed at this station.
Please wait behind the white line until the platform doors open.
Variant with interpunct; less common in everyday use.
Wasei-eigo derived from English 'platform door', shortened to ホームドア.