+1 here too, and a little bit of the same concerns expressed by Andy 
(https://xkcd.com/927/)

BTW, in the Italian mailing list there is currently a thread discussing if and 
how we should tag highways according to what are the official categories in the 
Italian Traffic Code (/Codice della Strada/) are.

There the concern is most about how to tag an official classification 
(/something that is implicit in the tag value in UK, if I'm not mistaken/) 
instead of a "descriptive classification".

But other concerns are emerging too (/at least in my head!/), like the 
administrative responsibility under which a given road falls (/state, region, 
province, municipality, private/) and ad-hoc values as input for the router 
(/s//peed limits, traffic density, etc. *OR* a comprehensive "preference"value  
/).

Keep on going!

Cheers,

Sergio



On 2019-02-25 22:10, Andy Townsend wrote:
> On 24/02/2019 14:25, djakk djakk wrote:
>>
>> I think we should decorrelate the attributes of a road : its administrative 
>> class, its importance in the road network (at least 5 levels), its physical 
>> characteristics (motorway-like, two large lanes, link=yes ...), possibly its 
>> traffic characteristics.
>>
>> So we can tag a secondary motorway or a primary road through a residential 
>> area or an official motorway with pedestrians actually walking on it.
>>
>> So that we’ll unify osm road classification through the world (remember the 
>> highway=trunk issue ;-))
>>
>
> It's a noble aim, but unfortunately the first thing that springs to mind is 
> https://xkcd.com/927/ :)
>
> However, some of the stuff on 
> https://wiki.openstreetmap.org/wiki/User:Djakk/new_tagging_scheme_for_roads I 
> definitely agree with, and in some cases actually do do myself - like trying 
> to capture the physical characteristics wherever relevant.
>
> Best Regards,
>
> Andy
>
>
> _______________________________________________
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