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Local door operation
Local door operation refers to a procedure and system in place on railway rolling stock on the United Kingdom railway network. It is where a single door on a train is operated by its train crew from a crew operated switch, often on a train door control panel operated by the train's guard. This differs from the Emergency Door Release or Egress that can be used by the general public in case of an emergency, this usual requires a cover to be removed or broken to operate and would never usually be used in the normal course of a journey.
==Location and operation==
The location of the local door varies and is usual in multiple locations on the train, and sometimes does not require a switch to operate in the case of outside doors to Brake Vans or Driving Van Trailers for example.
It is used to allow train crew to access the train without the use of the general passenger doors or for use in the Guards dispatch duties leaving a station. The public are not permitted to use this device and it should be impossible for a member of the public to access it. Brake Van doors and control panel covers for instance require keys to open, and in the case of door control panels require another key to prime them for use. Local door switches in the open position while disarmed usually activate the train’s emergency breaking systems; this prevents a door from opening by accident when a crew member arms the control while in motion.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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