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| Re: TA is obsessed with CBTC, and ''New'' tech for no reason. (578808) | |||
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Re: TA is obsessed with CBTC, and ''New'' tech for no reason. |
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Posted by Stephen Bauman on Sat Mar 1 09:29:08 2008, in response to Re: TA is obsessed with CBTC, and ''New'' tech for no reason., posted by Jeff H. on Sat Mar 1 01:16:02 2008. I would cautiously say that CBTC is a safer system than waysides signals and trip, on the average.I wouldn't. Avoiding a collision by an mile rates the same safety score as avoiding one by an inch. If CBTC does enjoy any benefit, it's in the area higher service levels for the same degree of safety. However, the existing wayside system with "discrete" trippers permits service levels far in excess of what is currently operated. When service levels begin to approach what the current system permits, then it may be time to examine this question again. The theoretical service level improvement for CBTC will be less than 5% over the current system. This may be sufficient to justify its use under certain circumstances. It isn't just now nor for the foreseeable future of anticipated service levels. |
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