On 3 January 2014 15:19, Fernando Trebien <fernando.treb...@gmail.com>wrote:
> I decided to extend my comparison between tracktype and surface, now > including smoothness. I think we may need a new tag to integrate all > surface quality classification systems (it can well be a simple > numeric tag). See this: http://i.imgur.com/yEJ52eE.png This table is interesting, but in my experience computers are better at looking up tables than humans ;) So instead of creating a new tag, why not settle with such a lookup table for routers/renderers only? Another idea would be to use a score system. For example the surface=compacted scores positive, say 3, and surface=asphalt sores 5. But smoothness=bad scores -2 and so on, from which one could obtain a measure of the overall quality of a road. One of the drawbacks of using a numeric grade for classifying road conditions is that after a while people forget why they did chose a given grade in the first place. If you leave the various tags surface, smoothness etc this becomes essentially self-documented. By the way, in Ouro Preto, Brazil, there are streets paved with cobblestone which get so slippery under wet condition that they can only be used by 4x4 vehicles.
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