[Tagging] Classifying roads from Trunk to Tertiary and Unclassified

Martin Koppenhoefer dieterdreist at gmail.com
Mon Aug 12 14:54:30 UTC 2019



sent from a phone

> On 12. Aug 2019, at 16:38, Paul Allen <pla16021 at gmail.com> wrote:
> 
> may not be entirely
> predictable (especially if we don't have access to traffic statistics) and the only objectively
> verifiable data we have is the signage. 


no, we also have our knowledge about the size and importance of the places that are connected, about right of way at crossings, road sections/size/surface quality, lanes, speed limits, „curvyness“, and we have an idea of traffic density (not as precise as true statistics maybe, but you usually have an idea), etc etc.



> If your country's government indicates with signs
> that a road as a primary route then that is what it is. 


no government says „primary“ road, they might say „A road“, or „Bundesstraße“ but the latter is only telling that the Federal government of Germany is in charge of the maintenance (i.e. it is somehow deemed to be important, but it doesn’t say _how_ important it is, because importance varies among Bundesstraßen, and it is only generally more important than a Kreisstraße (local connection road), while in a specific case it may be less important than a specific Kreisstraße.

I’m all for recording these classes (we do it in ref in Germany and Italy), but they cannot be an argument in the individual case in favor of a specific osm highway class.

Cheers Martin 


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