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[quote user="tree68"] <P>While GPS may not be accurate enough for traffic control, it can certainly be used for all sorts of traffic monitoring - the DS can look at a display and know pretty much exactly where every train is - down to +/- 3 meters. Add a GPS to the EOT and you can now see where both ends of the train are.</P> <P>Combine the train location GPS info with the RFID info being discussed in the "bar code" thread and you know pretty much exactly where every car that's in transit is.</P> <P>Of course, there are some down sides - if the crew decides to stop for ice cream, the DS can see it. A comment in a TRAINS article mentioned a crew using a GPS to check their speed (something I've done, too). Well, the DS, TM, RFE, etc, can probably do the same thing, too. From their desk.</P> <P>[/quote]</P> <P>This is a solution in search of a problem and misconstrues what dispatchers, trainmasters, and road foremen do with their time. None of them have the time or need to babysit trains. Knowing where the beginning and end of train might be is of no use. Either the train is in a block, or it's not. Fuzzy answers aren't suitable for train-control and is a flood of meaningless data otherwise.</P> <P>As for speed enforcement, this is very convoluted. Better to do it onboard in real time with predictive braking curves. The point is not to fire crews, it's to keep trains from speeding.</P> <P>S. Hadid</P>
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