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

[Martin Koppenhoefer]

2009/7/31 John Smith <delta_foxtrot at yahoo.com>:
> --- On Thu, 30/7/09, Martin Koppenhoefer <dieterdreist at gmail.com> wrote:
>
>> - residential roads (just in residential areas, no
>> connecting
>> function, you will not take this if you don't live in the
>> area)
>> - unclassified roads (not clear, there are voices that they
>> don't
>> exist in urban areas, I personally use them if there are
>> either no
>> residents nearby or if they are slightly bigger than
>> residential
>> streets and are used to access residential streets)
>
> Most of what I classify as unclassified roads (not streets) are usually lower on the chain than residential, as they only have 1 lane in most cases, so I wouldn't expect them to exist in urban areas.

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.

cheers,
Martin