there was a message a couple of weeks ago that i meant to respond to but now i can't find it; the gist of it was that it posed some useful questions that might be asked in the specific case of when a racing surface should be moved from OSM to OHM. similar questions might be applied for any other entity that is a candidate to be moved; i'm posing this for discussion right now as it rather directly applies to issues that are in front of me as i move forward mapping active, inactive and defunct racing sites in OSM & OHM. there is also the question of what do with partial racing surfaces, no longer usable for racing that still have significant physical traces.
i'll start with the last one first. One of the most famous former race tracks of them all is Brooklands in Weybridge, Surry in the UK. the circuit ceased operations at the start of WWII, and after the war it was judged to be too expensive to try to bring it back. the physical remnants of the Brooklands oval are in OSM, tagged highway=raceway (but the existing remnants of the road course are not present). i have mostly mapped the original Brooklands oval and road course in OHM but one road course segment is missing as i have yet to find a decent reference on its location (existing maps seem slightly speculative to me.) here is a view which overlays OHM on OSM (use the slider to adjust the opacity of the OHM raster image). http://www.na-motorsports.com/test/Brooklands.html so the question here really is how should the remnants be tagged? (for practical reasons i think the entire historic course belongs in OHM.) one commonly expressed idea is that things should be in OSM as long as there are physically identifiable remnants. but should other (non geospatial) information be a factor in this decision? i have a number of examples from recent mapping work: Second Creek/Rocky Mountain National/Mile High Dragway this is a complex just west of the Denver Airport. originally it was just the dragway, which shut down for safety reasons (insufficient shutdown area at the end of the strip.) subsequently, Rocky Mountain National Speedway was built on top of the north end of the dragstrip, and Second Creek Raceway was built to the south, reusing part of the drag strip as a straightaway. everything shut down in 2005; the land was sold for development. The oval and road course are just sitting there, but the bulldozer is probably not too far off. traces of the drag strip are still visible. Eric Wolf entered Second Creek into OHM and i added the dragstrip and oval; i believe this choice (OHM vs OSM) was probably correct given that there is no hope that these facilities will ever be used again. here's a link: http://www.na-motorsports.com/test/test4.html (note that the opening date for Second Creek is currently incorrect; a correction has been made in OHM but it hasn't trickled out into the OHM deployment of Overpass just yet.) so, here's a case where there is ample physical evidence, but also knowledge that the facilities will never, be used again. and a couple more physical evidence cases that put a very fine point on it, i think: Motor City Dragway: https://www.openstreetmap.org/#map=16/42.7182/-82.6775&layers=N Motion Raceway: https://www.openstreetmap.org/#map=16/39.5639/-89.0512&layers=N Bee Line Dragway: http://www.openhistoricalmap.org/#map=16/33.5081/-111.7604&layers=H note that i haven't been entirely consist here, but i'm looking for input on these questions. All three of these tracks are inactive and have been for some time. physically they are pretty similar, abandoned & deteriorating strips of pavement. some buildings apparently survive at Bee Line, otherwise all standing structures have disappeared. as for the chances of revival... Motor City Dragway was shut down due to town noise ordinances. it will not return to operation. maybe it should move to OHM because of that. Motion Dragway was shutdown due to liability concerns. there have been attempts to revive it but the property owners have not yet been shown a liability policy that satisfies their concerns. Bee Line Dragway was shut down by the property owners (the Salt River Pima/Maricopa Indian Community) over liability concerns; they have expressed no interest in returning it to operation. so which go into OHM and which go into OSM? or should there be a dual existence, minimal in OSM and fully documented in OHM? richard -- [email protected] Averill Park Networking - GIS & IT Consulting OpenStreetMap - PostgreSQL - Linux Java - Web Applications - Search
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