<div dir="ltr"><span style="font-size:13.1999998092651px;line-height:17.9999980926514px">Can we copy some of this: for other vehicles than mtb: </span><a href="http://www.dirtopia.com/wiki/4WD_Trail_Rating" target="_blank" style="font-size:13.1999998092651px;line-height:17.9999980926514px">http://www.dirtopia.com/wiki/4WD_Trail_Rating</a><span style="font-size:13.1999998092651px;line-height:17.9999980926514px">?</span><br></div><br><div class="gmail_quote">On Wed, Mar 18, 2015 at 6:55 AM David Bannon <<a href="mailto:dbannon@internode.on.net">dbannon@internode.on.net</a>> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">On Tue, 2015-03-17 at 16:39 -0700, Bryce Nesbitt wrote:<br>
<br>
> > <a href="http://wiki.openstreetmap.org/wiki/Key:mtb:scale" target="_blank">http://wiki.openstreetmap.org/<u></u>wiki/Key:mtb:scale</a><br>
<br>
> At grade 6, it's a list of things including a drop of over 2m.<br>
> It's fairly well fleshed out.<br>
><br>
True, but the other downhill scales, 0-5, have no measurables except<br>
gradient.<br>
><br>
If we can have such a scale for MTB and dirt bikes, why not for four<br>
wheeled vehicles ? Copy the style and approach ?<br>
<br>
Incidentally, take a look at where that guy on scale=4 is heading,<br>
crazy !<br>
<br>
David<br>
><br>
><br>
> On Tue, Mar 17, 2015 at 2:53 PM, David Bannon<br>
> <<a href="mailto:dbannon@internode.on.net" target="_blank">dbannon@internode.on.net</a>> wrote:<br>
> On Mon, 2015-03-16 at 23:22 -0700, Bryce Nesbitt wrote:<br>
><br>
> > road_usable=car;4x4;mt<br>
> > Tag what's there: measure something. Don't tag an<br>
> interpretation.<br>
><br>
> Bryce, please tell us how it should be done then. Don't just<br>
> sit there<br>
> saying "computer says no". A drovers dog can tell this<br>
> capability is<br>
> needed. Look at how many proposals there have been, at how<br>
> many times<br>
> its hit this thread.<br>
><br>
><br>
> No telling what a drovers dog is, but:<br>
><br>
><br>
> highway=track<br>
> surface=dirt<br>
> constraint:cobble_size:<u></u>sustained=15cm<br>
> constraint:cobble_size:<u></u>average=25cm<br>
> constraint:sand:worst=30cm<br>
> constraint:side_slope:worst=<u></u>22degrees<br>
><br>
><br>
><br>
> ---<br>
><br>
><br>
> highway=track<br>
> surface=dirt<br>
> surface:variation={1-smooth,2-<u></u>rough,3-potholed,4-rutted,5-<u></u>deeply_rutted}<br>
> surface:constraints=steep;<u></u>narrow;side_slope;sand;winch_<u></u>section;hells_angels<br>
><br>
><br>
><br>
><br>
> ---<br>
> highway=track<br>
> surface=dirt<br>
> surface:mtb={0-5} (Tag segments, or add "s" for sustained or "x" the<br>
> worst case. 5s 5x is thus harder than 1s 5x)<br>
> surface:4wd={0-5}<br>
><br>
> surface:2wd={0-5}<br>
><br>
> surface:hgv={0-5}<br>
><br>
> surface:motorbike={0-5}<br>
> surface:width=6m<br>
><br>
> surface:constraints=steep;<u></u>hello_kitty_gang;puncture vine<br>
><br>
><br>
><br>
> ---<br>
><br>
><br>
> And I previously posed that a survey of users would help, as long as<br>
> multiple answers are allowed:<br>
><br>
><br>
> User: Fred, Date: 2015-01-01 Condition report: went right through in a<br>
> Yugo with two flat tires. Vehicle=2wd<br>
> User: Fredy, Date: 2015-01-02 Condition report: impassable via car<br>
> after rain, had to turn back at Big Creek, nearly lost it at cliff.<br>
> Vehicle=4wd<br>
> User: Fredyy, Date: 2015-01-05 Condition report: alien encampment at<br>
> milepost 23 - nearly ate my vehicle. Vehicle=spaceship<br>
><br>
><br>
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> Tagging mailing list<br>
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> <a href="https://lists.openstreetmap.org/listinfo/tagging" target="_blank">https://lists.openstreetmap.<u></u>org/listinfo/tagging</a><br>
<br>
<br>
<br>
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</blockquote></div>