[OSM-talk] definition of the main highway-tag

Greg Troxel gdt at ir.bbn.com
Fri Jul 31 13:44:25 BST 2009


John Smith <delta_foxtrot at yahoo.com> writes:

> --- On Thu, 30/7/09, Martin Koppenhoefer <dieterdreist at gmail.com> wrote:
>
>> it's a different meaning in urban areas as in rural areas.
>> Many of
>> what you tag as primary and secondary in rural areas
>> (especially low
>> density ones) has 2 (1+1) lanes, while in a
>> metropolitan area will
>> very often be at least 2+2.
>
> Does mapnik know the difference?

Primary and secondary are about importance.  In rural areas, a 1+1 lane
can be very important, and I think the point is that in the city if it
were that important it probably would be bigger.  If you are about
#lanes, there's a lanes tag for that.
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