You just forgot to mention the table would solve this :-) https://wiki.openstreetmap.org/wiki/Default_speed_limits#The_table
And there should be a link to it on these pages : https://wiki.openstreetmap.org/wiki/Speed_limits#Country_code.2Fcategory_conversion_table https://wiki.openstreetmap.org/wiki/Key:maxspeed Perhaps there should also be a new value maxspeed=default, to express the road's speed limit refers to this table (where "default" links to the wiki page) ? Am 22.09.18 um 14:32 schrieb Colin Smale: > > Well said, I agree wholeheartedly. A local, anecdotal view is in > itself not enough to produce a data model that works for everyone. > > > > > On 2018-09-22 14:22, Tobias Zwick wrote: > >> Tagging an implicit speed limit explicitly for example in town with >> maxspeed=50 is straightforward enough for Germany. It seems natural that >> no specialist knowledge is required for that kind of thing. For a German. >> >> But let's look at some other countries for the default urban speed limit. >> >> Spain (ES): >> maxspeed=50 >> maxspeed:hazmat=40 >> >> Chile (CL): >> maxspeed=60 >> maxspeed:bus=50 >> maxspeed:hgv=50 >> >> Hungary (HR): >> maxspeed=50 >> maxspeed:tricycle=40 >> >> Kerala in India (IN-KL): >> maxspeed=50 >> maxspeed:conditional=40 @ (weight > 7.5) >> maxspeed:trailer=40 >> maxspeed:bus_articulated=40 >> maxspeed:hgv_articulated=40 >> maxspeed:bus:conditional=40 @ (weight > 7.5) >> maxspeed:hgv:conditional=40 @ (weight > 7.5) >> maxspeed:tricycle=30 >> >> Punjab in India (IN-PB): >> maxspeed=50 >> maxspeed:trailer=35 >> maxspeed:bus_articulated=30 >> maxspeed:hgv_articulated=30 >> maxspeed:hgv=45 >> maxspeed:hgv:conditional=40 @ (weight > 6) >> maxspeed:conditional=40 @ (weight > 6) >> maxspeed:trailer:conditional=30 @ (weight > 6) >> maxspeed:motorcycle=35 >> maxspeed:goods=45 >> maxspeed:goods:conditional=40 @ (weight > 6) >> >> Malta (MT): >> maxspeed=50 >> maxspeed:bus=40 >> maxspeed:hgv=30 >> maxspeed:goods=40 >> maxspeed:goods:conditional=30 @ (weight > 3) >> >> Poland (PL): >> maxspeed=50 >> maxspeed:conditional=60 @ (23:00-05:00) >> >> Zambia (ZM): >> maxspeed=50 >> maxspeed:conditional=40 @ (weight > 2.275) >> maxspeed:trailer=40 >> maxspeed:hgv=40 >> >> Because the maxspeed tag applies to all vehicles except overridden for a >> specific vehicle type or a conditional, specifying only maxspeed=50 in >> any of the above cases has to be considered wrong or at least >> incomplete. In other words, the tags you see above would need to be >> added in the case the speed limit is given explicitly. It is not so >> straightforward then anymore. >> >> So, maybe not for Germany, but as you see, in other places, this *is* >> specialist knowledge. No regular car driver in Punjab will be able to >> enumerate all these maxspeed rules. And, taking a less extreme example, >> I think the Polish OSM contributors wouldn't want to add this >> maxspeed:conditional=60 @ (23:00-05:00) to every single unsigned street >> in urban areas. >> >> Also, note this is only the urban speed limit, trust me, the default >> speed limit "for all other roads" (=rural) can be much more complex. >> >> Actually, don't trust me, see for yourself in the document I link all >> the time in the hope people would read it: >> https://wiki.openstreetmap.org/wiki/Default_speed_limits >> >> We can not get to any results or any progress on the matter of default >> speed limits (or for any topic, for that matter) if everyone just keeps >> arguing out of his best knowledge about his home region or country only. >> >> "It works for me" is simply not good enough for a global project. >> >> Cheers >> Tobias >> >> On 22/09/2018 01:03, Martin Koppenhoefer wrote: >>> >>> >>> sent from a phone >>> >>>> On 19. Sep 2018, at 21:16, Tobias Zwick <o...@westnordost.de >>>> <mailto:o...@westnordost.de>> wrote: >>>> >>>> This is a good argument against tagging an explicit maxspeed=X when >>>> there is actually no speed limit sign around (X is what the OSM mapper >>>> by his knowledge about the law thinks should be the default limit >>>> here). >>> >>> >>> everything that you map will be according to your understanding of >>> it, I cannot see a good argument for not tagging implicit limits, >>> even more as there is judgement needed based on the situation >>> (something humans can do much better than computers). Every holder >>> of a driving license should have the requisites to recognize the >>> speed limit on a given piece of road in their local area, so it >>> doesn't require specialist knowledge. >>> >>> We already have a reliable way to distinguish implicit from explicit >>> limits (we even have several of them), if you want to treat them >>> differently in your app, you can do it. >>> >>> There actually is a speed limit on most roads, including those >>> without explicit signage. Omitting it will leave us in the situation >>> that it really becomes unclear whether there is no sign or nobody >>> has bothered to enter it. >>> >>> Cheers, >>> Martin >>> _______________________________________________ >>> Tagging mailing list >>> Tagging@openstreetmap.org <mailto:Tagging@openstreetmap.org> >>> https://lists.openstreetmap.org/listinfo/tagging >> >> >> _______________________________________________ >> Tagging mailing list >> Tagging@openstreetmap.org <mailto:Tagging@openstreetmap.org> >> https://lists.openstreetmap.org/listinfo/tagging > > _______________________________________________ > Tagging mailing list > Tagging@openstreetmap.org > https://lists.openstreetmap.org/listinfo/tagging
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