[OHM] Moving Razed Railways to OHM – Legal and Technical Matters

[Richard Welty]

On 11/25/15 4:30 PM, Michael Reichert wrote:
> Are there any legal implications we have to care about? Or can we
> just announce a "Let's delete old railways at OSM and add them to
> OHM?". (We do not want to make a (semi-)mechanical mass import)
OHM and OSM licensing may in the long run not be entirely compatible;
OHM may be impelled towards public domain type licensing (i'll guess
CC0 but it's not yet decided) for various reasons. it's a topic we have
discussed a bit, and a reason why most of us are very careful about
how we source OHM data. just copying stuff from OSM is likely to
cause trouble in the long run. on the other hand, since the contributors
of the railway data are mostly well known figures, you can ask them for
permission; it's their contribution after all.
> Is it just enough to copy the tags 1:1 and add start_date=* and
> end_date=*?
OHM would probably not use the abandoned/razed tags, but instead
tag them as if they existed; start/end date take care of the rest.

richard

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