David, When we first proposed (and started using) the 4wd_only tag, there was a lot of pushback from people who complained that it was not a verifiable tag. Track type had the same response. We were able to show them that there are signs all over Australia that say 4WD only at the start of a road. I think you'll get a lot of reaction trying to add levels of 4WD required where there are no signs to point at. Feel free to advocate it, though, and to tag that way. If enough people tag things in a certain way, that's the surest way of setting a standard.
Stephen On 4 November 2012 13:41, David Bannon <[email protected]> wrote: > > Li, I beg to differ. While I agree that grading of a 4x4 track is > subjective, so is much of the other data in the OSM database. Must be that > way. > > The real issue is how important the data is. As I have mentioned, I am > concerned that maps are being rendered that ignore this data. Routing > engines are potentially sending people down roads that they, and their > vehicles are ill suited to. Bad things will definitely happen. > > The routing people are saying "but these tags don't even show on the OSM > maps, why should we worry ?". > > And as to subjective, while there will always be borderline cases, I don't > think it would be too hard to divide tracks up into - > > * 4x4 recommended - you will might be OK in a conventional car or (better > still) an SUV but you have been warned. > > * 4x4 required - you really need a stock 4x4, a real one with (eg) low > ratio. > > * 4x4 extreme - this is for the death or glory boys, they need experience > and modified vehicles. This is a recent addition ! > > I am pretty sure that if you and I spent a couple of weeks having some > driving fun, we'd agree on the vast majority of the tracks we graded. > > David > > > > > ----- Original Message ----- > From: > "Li Xia" <[email protected]> > > To: > "David Bannon" <[email protected]> > Cc: > "OSM Australian Talk List" <[email protected]> > Sent: > Sun, 4 Nov 2012 13:08:22 +1100 > Subject: > 4WD only tags > > > > Hi David, just my 2 cents on 4WD_only tags. > > By adding a 4x4 recommended tag will add to the complexity because it's > kind of subjective as to which roads/tracks are traversable in a 2WD > vehicle, therefor adding another option for this key will further > complicate the issue. > > Li. > > > _______________________________________________ > Talk-au mailing list > [email protected] > http://lists.openstreetmap.org/listinfo/talk-au > >
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