[Tagging] Feature Proposal - RFC - 3rd and 4th rail (Michael Reichert)
garry.keenor at gmail.com
Thu Jun 11 07:56:19 UTC 2020
Thanks for your comments. I'm a bit behind so I'll try to catch up with
your comments to date.
Re: 3rd_rail/4th_rail vs 3rail/4rail
I really don't mind and will go with the majority. Not sure how you
determine a majority with this process!
Re: using electrified=rail to mean (3rd or 4th rail)
I'm not in favour of this one - railway electrification engineers (of which
I am one) do not consider 4th rail to be a special case of 3rd rail, but
rather a distinct system with its own electrical feeding arrangement. It
would also run the risk of confusion in the mappers mind - they would read
as far as electrified=rail in the tag wiki and miss the later option for
4th rail. I'm happy to leave electrified=rail to mean 3rd rail if that is
what the group prefers.
Leaving electrified=rail to mean only 3rd rail has the advantage that it
reflects the current usage - with the exception of the London network
(which I will retag) and the very small Milan Metro 1 line (which I'm also
happy to retag).
Voltages for individual rails
We do have some thoughts on that which I will share in a later proposal,
but I would like to keep this change discussion focused purely on
Dual voltage areas
We do have a specific proposal/solution for that problem which I will
share in a later proposal, but I would like to keep this change discussion
focused purely on electrification type.
3 phase electrification
II haven't thought about that one, let's get this proposal through the
process and I'll put it on the list to think about.
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