> On Thursday 27 December 2012 09:51:36 Kevin Grossard wrote:
> > The wiki about the highway conventions distinguishes primairy, secondary
> > and tertiairy roads using the N-numbers (although there are some question
> > marks). Using the current conventions means using the old classification
> > when the N-numbers were given. Various N-ways got reconstructed, the
> > traffic got redirected by other roads, some roads aren't suitable anymore
> > for the current traffic.
> >
> > The spatial structure plan for Flanders (ruimtelijk structuurplan
> > Vlaanderen) has a list with the primairy roads [pages 368-377
> > http://www2.vlaanderen.be/ruimtelijk/docs/rsv2011/RSV2011.pdf]. I suggest
> > to adjust the wiki so there will be an uniform highway classification
> > where primairy roads are the roads selected in the structure plan. The
> > other N-roads can be describes as secondary roads. Tertiary roads can be
> > described as other important local roads (nl: steenwegen die geen
> > secundaire weg zijn). Minor or residential roads can be understand as
> > local roads (nl: lokale wegen). What do you think?
>
> I don't really think we can just take that classification and apply it to
> OSM.
> It may not look like it from the map in that file, but it would make Flanders
> almost void of primary roads. Our government isn't very keen to give lots of
> roads a primary status. And all the dead-end primary roads won't give a nice
> map either (ringway of Lier without any primary road connecting to it, things
> like that).
>
> I've been aware about the official classification (read some previous
> discussions in the mailing list archive), but I think we at least need to
> include some secundary classified roads tagged as primary in OSM to make a
> useful map. So far, we don't have a list of those. In the UK, the category of
> official primary roads would be tagged as trunk in OSM.
>
> That said, using road numbers to determine OSM classification is actually how
> it's done in most countries. It's not perfect by far but we've always allowed
> some deviations from the rule where it makes sense.
>
> Ben
Okay, there aren't a lot of primary roads in Belgium but that's the result of
the historical urban planning and short term vision.
Fact is that primary roads also differ in reality from the secondary roads. For
example like the surface, the lack of houses, shops and schools (lineair
settlement and crossings through villages), the lack of cycle tracks, ...
Using the road numbers is a lot easier and that's a good argument but the goal
of OSM isn't making the Belgium roads more attractive, i suppose? I don't get
why a dead end primary road connected to a secondary road can't be useful. They
will look stupid but that's reality and where urban planning in Belgium is all
about.
But like you said, it would be useful to make a list with exceptions to make
and keep it simple if that's the way you want to keep it.
Kevin
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