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| London Transport (uk.transport.london) Discussion of all forms of transport in London. |
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#1
August 22nd 07, 07:05 PM
posted to uk.transport.london
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How can you have a signal failure on an ATO system?
Came back from holiday today to be greeted by the usual tube **** up. Signal failure on the Victoria line. Something that I hadn't wondered before is how exactly can you have a signal failure on a line thats controlled by ATO via a leaky feeder cable? The light signals are AFAIK there simply as extra information for drivers and arn't really required anyway so if one fails so what? The train is control by the ATO cable signals , not a cluster of coloured lights in the tunnel. Or is "signal failure" just an LU catch all phrase for a computer failure? B2003 |
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