[Tagging] Road hierarchy

Peter Elderson pelderson at gmail.com
Thu Aug 8 11:16:29 UTC 2019

To be practical, I think I will retag the clearly residential roads now
tagged as 'unclassified' in my town, to 'residential'. Some roads are now
tagged as residential, but the main function is getting through the
village. These tend to give access to housing as well, but houses are
separated from the road by e.g. broad pedestrian pavements, parking lanes,
stretches of greenery, a row of trees, kerbs, and/or separate cycleways.

If e.g. a bus uses such a road I will retag it as unclassified. I would use
quaternary if I could be sure of rendering and routing, which I am not.

Vr gr Peter Elderson

Op do 8 aug. 2019 om 12:14 schreef Paul Allen <pla16021 at gmail.com>:

> On Thu, 8 Aug 2019 at 03:18, Michael Tsang <miklcct at gmail.com> wrote:
> If the "primary purpose" of the road is through traffic, and the "driving
>> experience" is like on a major road (e.g. straight, fast, no obstruction,
>> no
>> give way, etc.), that part of the road is still red / pink.
>> However, if that road is built like the other residential cul-de-sac with
>> a
>> lot of slowing and calming features like give ways, curves, or very
>> narrow
>> such that it become a choke point causing serious traffic congestion
>> every day,
>> I will think it as residential.
> I think we're pretty much in agreement on this.  Of course, I live in the
> UK so through
> routes are officially designated and guesswork doesn't need to be
> applied.  So for me,
> it's simple: if it is an officially-designated through route then that's
> how it gets tagged,
> whether there are houses along it or not.  For others it may be harder if
> there are no
> official designations for through routes, then they have to use their
> judgement to see
> if it quacks like a through route.  In either case, if it's not a through
> route and has
> houses along it then it's residential (or, in some cases where the houses
> are far
> apart, a service road or even a track).
> There might be a case for some form of tagging that says "this is
> primary/seconday/
> tertiary/quaternary route with houses along it" but I think an area tagged
> with place=*
> makes that clear for human data consumers.  I suppose there are edge cases
> where
> a router could be faced with two alternative routes at the same level and
> with the
> same speed limits and the same distance between two given points but they
> have no
> way of knowing that one has houses along it but the other does not, but
> it's unlikely.
> Same distance is unlikely.  Same distance with same speed limits is even
> more
> unlikely, especially if one has houses and the other does not.
> What I don't see as sensible is tagging through routes as residential
> because there are
> some houses.
> --
> Paul
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