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| Code amber alert (London Underground) ： ウィキペディア英語版 |
London Underground code alert
A London Underground code alert is a warning issued by a London Underground Line Controller (who oversees the running of a line in conjunction with the signal operator) over the radio system giving both train and station staff information about a potential problem. The codes are rarely used as they are specifically reserved for emergency situations.
==Codes==
A code amber alert requires all trains to go no further than the next station as far as possible while obeying all signals.〔Rule Book 7 Train incidents and safety equipment p11 - 12 STAFF ISSUED ONLY〕 The order stops the trains but permits the rapid evacuation of carriages and stations and the rerouting of passengers. A code amber alert was issued in response to both the London bombings on 7 July and 21 July in 2005.
A code red alert is an immediate stop order issued to all trains irrespective of their locations.〔Rule Book 7 Train incidents and safety equipment p12 STAFF ISSUED ONLY〕 This could result in getting passengers out from trains stopped away from platforms or part-way down tunnels. In these cases, special procedures would be required to evacuate the carriages when considering the presence of electrified rails in the tunnels.
An Emergency Code Evacuation is issued when a specific area has to be evacuated. This code is used to evacuate a section of the line when life and safety is in direct peril.〔Rule Book 7 Train incidents and safety equipment p13 STAFF ISSUED ONLY〕 This code allows abnormal movement of trains (For example: trains moving in the wrong direction to reach a station.).
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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