[Tagging] inconsistencies in bridge

[Nathan Edgars II]

On Mon, Sep 27, 2010 at 8:23 PM, M∡rtin Koppenhoefer
<dieterdreist at gmail.com> wrote:
> 2010/9/28 Nathan Edgars II <neroute2 at gmail.com>:
>> On Mon, Sep 27, 2010 at 8:00 PM, Dave F. <davefox at madasafish.com> wrote:
>>> But only add what is actually visibly there now. Not what was there fifty
>>> years ago.
>>
>> What was there 50 years ago is useful, and removing it would be
>> vandalism. You can argue about whether Mapnik should show it, but
>> don't remove it.
>
> I agree, as long as it keeps little. Maybe a good rule of thumb would
> be to see if the data was imported or manually inserted. It is
> unlikely, that people will manually add a lot of historic stuff
> quicker then the community is able to develop a consistent system to
> filter timebased information. Automatic imports of old data might
> instead create such a mess, that editing of the current situation
> would be prevented.

I've manually added the majority of abandoned railways in Florida, US.
Some still have traces and some don't, though even the latter are of
local interest, such as the old "Dinky Line" between Orlando and
Winter Park: http://www.openstreetmap.org/browse/way/47286394

The TIGER import, by the way, included abandoned railways that had
been shown as abandoned on the USGS topos from which TIGER's railway
layer was derived.