On Sat, 13 Jun 2020 at 17:50, Garry Keenor <[email protected]> wrote:
> Paul - thanks for the response. I struggle with the idea that someone > would know that a route is electrified with a ground level contact system, > but not how many rails there are. The possible sources are a) local > knowledge, > Or local-ish knowledge. On-line newspaper article saying the line has been electrified (I'm local to me, and I know how to use the internet; the newspaper is local to the line). b) wikipedia > Never trust wikiepedia. :) and c) aerial imagery. > Sometimes aerial imagery is crappy. Good enough to see that there are no gantries for carrying an overhead line but not good enough to count rails. Unlikely, particularly on a long line, but possible. > All of these will, 9 times out of 10, define the system. Also, there are > only 2 networks that I can identify worldwide that are 4th rail, and I've > tagged them both already. :-) > So when 8 more networks are converted to 4th rail, there's a risk that one of them (using your figures) can't be pinned down. :) I assume that more networks will be converted over time, or new ones will be built as 4th rail. Or will they? -- Paul
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