Quote:
Originally Posted by aussiesteve
Points are usually manual within such regions.
Without track circuiting existing at the switch, the alignment may not be detectable with PTC.
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I guess the old cost/benefit ratio applies here. And the old chestnut...what price a life ?
There are probably thousands of sidings with manual switches for sidings in the US.
Quote:
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Originally Posted by Tony
With the cost of electronics dropping all the time, why can a remote installation for facing points not be arranged ?
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Yes, absolutely. A warning signal located at service braking distance (2k in the UK) from the sidings They could possibly save themselves cabling costs and use a radio link. Lineside solar panels make this plausible.
Otherwise, tie in the switch detection to PTC. Once again it could be done by radio link or internet. Obviously if the link drops, the train has to go at caution and examine the position of the switch. Time consuming and a PITA, but better than a train wreck.
BW