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Re: TA is obsessed with CBTC, and ''New'' tech for no reason.

Posted by Jeff H. on Sat Mar 1 01:16:02 2008, in response to Re: TA is obsessed with CBTC, and ''New'' tech for no reason., posted by trainsarefun on Sat Mar 1 00:20:53 2008.

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I would cautiously say that CBTC is a safer system than
waysides signals and trip, on the average. BUT, whenever
you dumb it down there is a long-term risk that the operating
personnel will sink to the level you set for them. When that
happens, you have a degraded ability to respond in the field
to unusual situations. Most accidents with PTC systems are not
because of "false-clear" signal failures, but secondary
things which happen during failure work-around, or
out of the ordinary moves.

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