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| Re: Canarsie CBTC (98880) | |||
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Re: Canarsie CBTC |
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Posted by Stephen Bauman on Tue Jun 14 19:34:33 2005, in response to Re: Canarsie CBTC, posted by Jeff H. on Tue Jun 14 03:11:25 2005. Sequitur?Let me rub some salt into the wound by answering your question a different way. :=) A zone controller failure should not have any impact. According to the early specs that I read, there would be dual controllers for each zone. They would run master/slave with automatic cutover should one of them fail. Such technology is widely used, so it should not prove to be any challenge to implement. I understand that the best that can be said for the standard track circuit system failure is that the trains will stop running. Told you, you wouldn't like the answer. :=) Am I enough of a realist to believe that the TA would not repair/replace a damaged zone controller in a timely manner. This was the same outfit that ran dual power cables for their track circuits on the Lex. I assume the only difference was that the switching of power cables was manual, not automatic. |
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