[Talk-us] Getting ready for the license change

Martijn van Exel m at rtijn.org
Fri Jan 13 15:49:10 GMT 2012

Hi all,

The final phase of the license changeover to the Open Database
License[1] from our current CC-BY-SA is drawing near. From April 1[2],
current OpenStreetMap data will only be available under the new
license. This means that all data that was contributed by those who
did not agree to the new Contributor Terms (CT) will be removed by
then. Although the vast majority of contributors have agreed to the
CT, some 'tainted' data is in jeopardy of being lost. Have a look at
the CleanMap[3] and Acceptance Statistics[4] tools to get a sense of
what we're talking about. There's even significant stretches of
interstate among the jeopardized data.

There are several things we can do together to minimize the data loss
and ensure a smooth changeover to the new license:
* Contact mappers who have declined or not agreed yet. Use the OSM
Inspektor[5] to identify those users in your area and contact them
using the messaging function on the OSM web site. I'd highly recommend
to start doing that first. Mappers who are no longer active may have
just overlooked the invitation email to accept the CT. Experience
shows that a little effort contacting them can yield quick progress.
Mappers who have already declined have made that conscious decision,
but I'd try contacting them anyway.
* Remap data that remains at risk of being removed, following the
guidelines on the wiki (see links below).

If your own area is clean, please consider helping out in more heavily
affected areas.

The OSM wiki provides more background and excellent, up to date
resources[6][7]. You'll find answers to most questions you may have


[1] http://wiki.openstreetmap.org/wiki/Open_Database_Licence
[2] http://wiki.openstreetmap.org/wiki/Open_Data_License/Implementation_Plan
[3] http://cleanmap.poole.ch/?zoom=5&lat=38.94&lon=-97.04
[4] http://odbl.poole.ch/
[5] http://tools.geofabrik.de/osmi/?view=wtfe&lon=-99.80273&lat=39.46504&zoom=4
[6] http://wiki.openstreetmap.org/wiki/Remapping
[7] http://wiki.openstreetmap.org/wiki/Help_preparing_for_the_license_change

martijn van exel
geospatial omnivore
1109 1st ave #2
salt lake city, ut 84103

More information about the Talk-us mailing list