Jesse, you are very welcome ! I have campaigned on this topic a couple of times but without really achieving any consensus. Chief problem is some people's fear of 'subjectiveness'.
I don't really care exactly how it is done as long as we end up with a clear model advising people whether or not they should attempt a particular road. I have posted references to lost lives as a result of bad decisions. Its easier to get people to take notice of simply presented data. Too much detail scares most people .... My pet solution was based around tracktype= with two legs, (a) we reassert that tracktype= applies to all highway=, not just highway=track. This was the original intention. (b) extend the five grades by another three, being 4wd recommended, required and extreme. Another approach is to make wider use of 4wd_only=yes. Extend it to have the 'recommended' and 'extreme' values. I was advised that tags starting with a number were a problem in mapnik but others have dismissed that and a new default render has taken over now. I prefer the tracktype= model as it has pretty wide use world wide, 4wd_only= does not yet get much use outside of Australia. Please see Unsealed and 4wd roads in - https://wiki.openstreetmap.org/wiki/Talk:Australian_Tagging_Guidelines Some more ranting on my wiki page (inc discussion) https://wiki.openstreetmap.org/wiki/User:Davo David On Tue, 2014-07-08 at 13:00 -0600, Jesse Crawford wrote: > Apologies if this is the wrong list, I'm new to the community. > > > On the wiki talk page for tracktype [1] there is some discussion from > Australians of this property not properly reflecting road usability. > Here in desert New Mexico I am working on significantly improving > mapping of tracks, and I have the same problem. Many tracks here are > apparently Grade 1 or 2 as they are made up of well-compacted gravel > and exposed bedrock. However, due to grade or unevenness they are > often unsuitable (and unsafe) for 2WD or low-clearance vehicles. These > paths are often quite dangerous to be stuck on, miles away from the > nearest person and beyond phone reception. > > > It seems that there are properties to express information like > evenness, but they are not taken into account by the standard renderer > while the Grade is. Are there any plans to redefine Grade or create a > new property for use by renderers that directly expresses the > usability of a road? > > > My suggestion would be adding a property (perhaps "suitability") with > values of "2wd" and "4wd," which matches the semantics used by e.g. > Forest Service maps which often show 4WD-only tracks with a different > line. > > > As a second but similar question, off-highway vehicles are a popular > pasttime here and there are many tracks intended for ATVs or > dirtbikes, not wide enough for SUVs. Is there a best practice for > tagging these types of paths? > > > Thanks! > > > [1] https://wiki.openstreetmap.org/wiki/Key:tracktype > > > Jesse B. Crawford > Student, Information Technology > New Mexico Inst. of Mining & Tech > > [email protected] | [email protected] > http://cs.nmt.edu/~jcrawford | http://jbcrawford.us > > _______________________________________________ > Tagging mailing list > [email protected] > https://lists.openstreetmap.org/listinfo/tagging _______________________________________________ Tagging mailing list [email protected] https://lists.openstreetmap.org/listinfo/tagging
