Hi Peter, Unfortunately we don’t take account of any country defaults due to the complexities involved.
I’m sure that someone will come up with a tool to highlight the problems if a national speed limit does change, especially if the maxspeed:type is used appropriately. Shaun On 29 Jul 2014, at 12:39, Peter Wendorff <wendo...@uni-paderborn.de> wrote: > Hi Shaun, > > if I understand these maps correctly, they show streets without a > maxspeed tag, but not msising maxspeed restrictions under the assumption > of a national default or something like that (although it seems not so > show any "missing maxspeed" in Germany, so there might be something like > that applied). > > If maxspeed is and should be applied on any street, this works, but only > until speed limits change. > If you imply the default according to highway class and location, it > fails as many roads do follow these defaults and cannot be counted as > "missing", nor is it possible to decide where else a maxspeed is missing > then. > > In any case reporting missing maxspeeds will work only until the speed > limit is changed on the ground as it is even more difficult (if > possible) to detect where there are errors (!) in existing speed limits. > > regards > Peter > > Am 29.07.2014 um 13:10 schrieb Shaun McDonald: >> Hi Peter, >> >> The following ITO Map shows missing maxspeed tags where there isn’t any >> purple (mph maxspeed) or dark green (km/h maxspeed) colour: >> http://www.itoworld.com/map/125?lon=-0.08316&lat=51.51851&zoom=14&open_sidebar=map_key&fullscreen=true >> >> If you want to see the current speed limits see: >> http://www.itoworld.com/map/124?lon=-0.08316&lat=51.51851&zoom=14&open_sidebar=map_key&fullscreen=true >> >> Clicking the maps gives more info in the sidebar. >> >> Shaun >> >> Disclaimer: Employee of ITO World who produce the maps above. >> >> On 29 Jul 2014, at 11:49, Peter Wendorff <wendo...@uni-paderborn.de> wrote: >> >>> Sorry, >>> there are QA tools to detect where speed limits are missing? >>> Can you give me a link? >>> And - if it's not self explaining: how should that work? I don't see any >>> way to detect missing speed limits in the data beyond cases where those >>> are implicit defaults, like 100 on non-trunk roads away from built up >>> areas in Germany (which is complicated enough to derive from the data), >>> or 130 for trunk roads (although most often there are lower limits), or >>> 50 in cities (as the most often down-signed default). >>> >>> So if there is any QA tool that detects that, I fear it uses third party >>> sources, a reporting system similar to the notes feature, but using a >>> different channel, or it is restricted to some cornercases only. I doubt >>> there is something like that which could make notes about speed limit >>> errors in osm obsolete. >>> >>> IMHO notes are to be checked in person on the ground usually. If there's >>> nobody in France to do that, yes, then notes will remain in the database >>> for a long time, but basically they stay correct: Here is something >>> missing or wrong, please check that on the ground. >>> >>> regards >>> Peter >>> >>> Am 29.07.2014 um 11:09 schrieb JB: >>>> I don't necessarily want to analyse once more how the notes are opened, >>>> closed or not closed and to what aim, nor analyse the end of >>>> OpenStreetBug life and the quality of the remaining bugs, but in France, >>>> I have never ever seen anyone comment on someone else's note (or « >>>> resurvey »). The only comments I have seen were from the note opener, >>>> when prompted by a potential corrector. >>>> >>>> So a note which indicates « probably 90km/h here » or « speed limit is >>>> not 0km/h » may remain there for years (yes, years), demotivate >>>> potential note closers, never be closed. I do not think they participate >>>> to a high quality note db. There are quality assessments tools around >>>> that allow contributors to detect where speed limits are missing. >>>> >>>> JB, with perhaps some bad faith in there, but not that much. >>>> >>>> >>>> Le 29/07/2014 10:19, Steve Doerr a écrit : >>>>> On 29/07/2014 08:32, JB wrote: >>>>> >>>>>> Anyway, as for most notes concerning speed limits, if you do no have >>>>>> the beginning and the end of the limit, at least in France, the >>>>>> information is quite useless. >>>>> >>>>> Are we all armchair mappers now? Surely the note should prompt someone >>>>> local to go out to the location and find out where the speed limit >>>>> starts and ends? >>>>> >>>> >>>> >>>> _______________________________________________ >>>> talk mailing list >>>> talk@openstreetmap.org >>>> https://lists.openstreetmap.org/listinfo/talk >>>> >>> >>> >>> _______________________________________________ >>> talk mailing list >>> talk@openstreetmap.org >>> https://lists.openstreetmap.org/listinfo/talk >> >> > > > _______________________________________________ > talk mailing list > talk@openstreetmap.org > https://lists.openstreetmap.org/listinfo/talk _______________________________________________ talk mailing list talk@openstreetmap.org https://lists.openstreetmap.org/listinfo/talk
