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| Re: Canarsie CBTC / GPS (100563) | |||
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Re: Canarsie CBTC / GPS |
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Posted by Jeff H. on Sun Jun 19 03:43:36 2005, in response to Re: Canarsie CBTC, posted by Stephen Bauman on Sat Jun 18 09:42:30 2005. I don't know how this tangent about using GPS got started, becauseno one that I can think of is using it for railway signaling or thinking about it. BUT, as long as we're on the subject: Did you forget one important thing about the GPS system? It is a service provided by the US military, and can be withdrawn at any time without notice. Wasn't it turned off for a while after Sep 11 (or maybe that was just selective availability)? |
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