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Licence/Licence and Legal FAQ: Difference between revisions

 
* You can however, put separate and distinct data layers on top of your map, such as icons showing specialists points of interest, routes, track logs, shaded areas, contours and the like, then Share-Alike does not apply to these elements as long as they do not interact with the map underneath.
 
===Can I use OSM data and OpenStreetMap-derived maps to verify my own data without triggering share-alike?===
 
Yes, provided that you are only comparing and do not copy any OpenStreetMap data. If you make any changes to your data after making the comparison, you should be able to reasonably demonstrate that any such change was made either from your own physical observation or comes from a non-OpenStreetMap source accessed directly by you. I.e you can compare but not take!
 
* Example 1: You notice that a street is called one name on your map and another in OpenStreetMap. You should visit the street and check the name, then you are free to put that name in your data as it is your own observation.
 
* Example 2: You notice that a boundary is different in your data and OpenStreetMap. You should check back to original authoritative sources and make any correction required.
 
==What should my lawyer look at?==