My impression is that a lot of the source:maxspeed were added by a single user in an armchair edit. So its prevalence is not really an indicator of anything.
On Tue, Feb 26, 2013 at 12:07 AM, Jason Cunningham <[email protected] > wrote: > On 22 February 2013 16:38, Martin Vonwald <[email protected]> wrote: > >> Hi! >> >> Recently the use of the key maxspeed:type was documented in the wiki >> (see [1] and [2]). It seems to be used in the UK for the same purpose >> as source:maxspeed. I quote: "In the UK the general practice is to use >> the maxspeed:type tag as the source:*=* should be for how the data was >> collected, not how it was derived. " >> >> Well - there's a point. Yes, I know how often source:maxspeed is >> tagged (241,738 times). But besides being tagged, is it "used" for >> anything at the moment? >> > > I think the changes to the wiki are slightly misleading. It is not general > practice in the UK to use maxspeed:type There have been a few discussions > about maxspeed tagging on the talk-gb list with limited consensus. It's > difficult topic to summarise. > A number of UK mappers feel that the simple maxspeed tag with a numerical > value is of limited value or even incorrect. Along the majority of our > roads the speed limit is derived by the type of the road and your vehicle. > As Philip Barnes pointed out, speed limit changes can happen and if so are > likely to be applied to a type of road. Discussions on the subject can be > found by searching maxspeed in the GB mailing list. > > Discussion in the talk-gb list suggested that maxspeed:type would be > better than source:maxspeed. Several people agreed but it was pointed out > the globally source:maxspeed was preferred, and that in the UK > source:maxspeed was also preferred (demonstrated by tagwatch). I believe > Peter Miller (of ITO Map) was one of those arguing for the maxspeed:type > tag. In the last year Peter has put a lot of time into adding and cleaning > up maxspeed tags on major UK roads and has been using the maxspeed:type > tag. This has led to significant increase in the number of times the tag > now appears in the UK. > > The updates to the wiki page imply that maxspeed:type is the UK standard, > but that is not the case. Source:maxspeed still appears more widespread > across the country. Personally I think maxspeed:type is better but I > carried on using source:maxspeed because it appeared to be the accepted > 'global' way of doing things. > > Jason > > _______________________________________________ > Tagging mailing list > [email protected] > http://lists.openstreetmap.org/listinfo/tagging > >
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