mtb:scale=yes is like surface=yes it has no real meaning, mtb:scale is a
scale from 0 flat surface to 6 obstacle taller than a human.

Actually I think mtb:scale is easier to use than smoothness : it's a more
objective tag.
(Sometime I think stating smoothness with average size of gravel/obstacle
in cm would be much easier and objective tagging, but that is an other
subject.)

Le sam. 4 avr. 2020 à 23:57, Marc M. <marc_marc_...@hotmail.com> a écrit :

> Le 04.04.20 à 15:47, Kevin Kenny a écrit :
> > how does a mapper who isn't expert enough to grade accurately
> > the difficulty of a MTB trail, but can
> > clearly see, 'a road bike wouldn't work here'
>
> it's very subjective
> an example of a situation that was not well described with
> surface/inclined/... tags ?
>
> you may use =yes as default value when you don't use a more precise
> value -> mtb:scale=yes ?
>
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>


-- 
Florimond Berthoux
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