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Some features are always present and are indisputable mappable - like<br />buildings.<br /><br />Some features are seasonal but are easily verifiable all the time as they<br />merely change the form. For example an intermittent river - riverbed is<br />always there, nearly always with obvious indications that water flowed<br />there some time ago.<br /><br />There are features that obviously should not be mapped - with objects like<br />vehicles in motion being the extreme example. Other obvious examples are<br />events - OpenStreetMap is not a place to map events that happened in the<br />past or will likely happen in the future. One may still map memorial<br />plaques or monuments or football stadiums, but OSM is not place to mark for<br />examples places of famous robberies or crash sites of aircraft or planned<br />locations and dates of matches of a soccer tournament.<br /><br />But there are also features that are possible to survey only during<br />specific circumstances and unverifiable otherwise. For example shops in a<br />mall building closed during night - verifiable only during opening hours,<br />with building interior inaccessible otherwise. Other example is a shop<br />without sign, or with movable sign placed on a sidewalk during opening<br />hours - such building may be after closing indistinguishable from<br />residential building with a garage or a vacant shop with type of the shop<br />nearly impossible to guess. Or a street vendor - somebody may be regularly<br />at given location within his/her opening hours, after that time such place<br />would be indistinguishable from any other party of the street. Or movable<br />loungers, present at the same location each spring, summer and autumn,<br />removed for winter. Or a flea market present on each Tuesday, regular<br />street otherwise (maybe with some street markings).<br /><br />I think that all cases like that may be mapped, and I plan to amend "Good<br />practice" wiki page to explicitly allow features that are reoccurring and<br />to explain that they are not included into "temporary features" that are<br />not supposed to be mapped.<br /><br />This discussion was started as result of<br /><div><a href="https://wiki.openstreetmap.org/wiki/Talk:Good_practice#temporary_events_and_temporary_features_clarification" target="_blank" rel="noopener noreferrer">https://wiki.openstreetmap.org/wiki/Talk:Good_practice#temporary_events_and_temporary_features_clarification</a></div><div>on request of SelfishSeahorse<br /></div> </body>
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