[OSM-talk] MBR trails

[Rodrigo Moya]

On Tue, 2007-03-20 at 09:23 +0100, Styno wrote:
> I'm trying to tag tracks with the similar setup (narrow, off-road, 
> single-track) but with different soil composition (hard/clay/mud forrest 
> floor or loose sand) and had an discussion about it on IRC with Ben who 
> also does this kind of tagging.
> 
> Our conclusion was to tag these tracks using:
> highway = cycleway
> tracktype = grade1 to grade5
> 
> Where the tracktype is a proposed feature: 
> http://wiki.openstreetmap.org/index.php/Proposed_features/grade1-5
> 
> Though we couldn't think of a better scheme, I do think tagging like 
> this is still a compromise because:
> a) according to the tracktype definition the narrowness suggests grade5 
> while the hard surface (rocks) suggests grade2.
> b) the tracks are rendered as cycleways (green line in osmarender) which 
>   might give ordinary (city) bikers the idea that they can use this track.
> 
yes. Tracks are different depending on the surface, the narrowness and
the inclination, so we need maybe some way of indicating all these
variables, because it is not the same a grade2 track like the one in the
photo above than a rocky track with a high step.

Some time ago, on a motorbikes phorum, this was suggested:
http://motostrail.com/xoops/modules/newbb/viewtopic.php?topic_id=6391&forum=1

It's in Spanish, but you can see in the photos the idea, which is to
range them from 10 to 6 depending on the narrowness, and then, subtract 
numbers depending on the difficulties in the track.

Not sure if it would work, since it's just an idea, but I thought I'd
bring it here
-- 
Rodrigo Moya <rodrigo at gnome-db.org>