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| Re: TA is obsessed with CBTC, and ''New'' tech for no reason. (578202) | |||
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Re: TA is obsessed with CBTC, and ''New'' tech for no reason. |
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Posted by Jeff H. on Fri Feb 29 02:21:52 2008, in response to TA is obsessed with CBTC, and "New" tech for no reason., posted by JournalSquare-K-Car on Thu Feb 28 22:08:34 2008. The issue of CBTC is a complex one. Although I think the TAwould have gotten a better ROI on a more conservative system such as coded track circuits, cab signals and ASC, circumstances beyond the control of just the signal department (or CPM) are mandating that something be done to improve the fixed wayside system with mechanical train stops. You have to understand that the existing system was designed with an important underlying premise: that the motorman was well-trained, generally had good control of his train, and most importantly cared deeply about avoiding an accident. In other words, the system was designed to keep honest people honest and to catch lapses of attention which are normal human failings. Because of many factors including our screwed up legal system, management structure, labor relations, training procedures, etc. there are new design assumptions required of the signal system. Basically the signal engineer today must assume that the train operator is inattentive, has a limited ability to control the train, and is practically a suicidal maniac hell-bent on causing a wreck. I don't think it is possible to go back to the old way, unfortunately. |
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