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[quote]QUOTE: Originally posted by Mark W. Hemphill Dave: The Lockheed-Martin study concluded the number of collisions that a PTC system equipping the U.S. rail network would prevent is on the order of 1 per annum. Cost ~ $8 billion. Jay: Your transponder idea is intriguing, but I don't know enough about what you're proposing to comment. Elaborate, please. I can't put my finger on it, but I have the gut feeling there's a major flaw somewhere. (Just what you want to do: spend two hours thinking it out so we can shoot it down. Isn't there something on TV that would be more fun? Maybe a "Friends" marathon? Political speeches? Claymation bobble-head survivor extreme makeover challenge for the straight guy?) [/quote] What channel is the claymation on? An empirical question...longevity is (hopefully) the goal of all railroads-8 billion today, 80 billion in ten years. Could it be implemented in sections/districts over time and phased-in?
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