On 12/09/2016 01:15, Daniel Koć wrote:
W dniu 11.09.2016 17:53, Dave F napisał(a):
Well, OK. 'Classification' then (which gives indications to who can
use it).
I still hold my position. Classification doesn't tell who can use it,
rather the purpose.
Hmm.. 'Motorway', when first mapped, had the assumption of a surface
suitable to take vehicles at high speed & bike riders weren't permitted.
This is now gradually changing with specific sub-tag to clarify.
Service road and corridor are clear about it: first is for "last mile"
servicing roads (and not who can drive there), the second one is for
connecting rooms inside the building.
I've no idea what you're talking about here.
How are they second class?
This is where secondary tags become useful. If renderers wants to
This is exactly why it is a second class citizen - it needs a
secondary tagging.
Err.. No. It gives clarity & detail. See my note about motorways above.
What would you say if we had:
highway=road
road:class=primary
road:link=yes
instead of highway=primary_link? And this sub-type has only 250k of uses.
I'd say use primary_link as it involves less typing, but both are equal
in meaning & standing.
Highway=path may be as generic as say highway=road, highway=pedestrian
is more or less as luxury as motorway - and we have highway=footway
for all the other uses. Even path/footway difference is not clear, so
we try to fix it with adding surface.
Yes. Richard Faihurst has called for the end of 'path'. All should be
footway & defined further by using sub-tags.
show, for instance, all paths in one style, they easily can by
filtering just highway=footway* If they want to differentiate
different surfaces*, access restrictions etc, they can do that by
referring to secondary tags.
But you can also use surface for roads to differentiate them. Yet we
mainly rely on roads purpose, not the surface.
Again, see my motorway comment.
Pedestrian ways can be also serving different purposes (and so they
should have different rendering, as we do for roads):
- corridors
- cemetery, park and allotments alleys
- long-distance outdoor hiking trails
- sidewalk
- crossing
- via ferrata
and probably some other specific types for which we even have a proper
name for.
Well, yes & no
Yes: This is done using sub-tags as I clearly showed above.
No: You know cemetery & park paths are cemetery & park paths because
they're in a cemetery or park. (OSM is geospatially aware - see
discussions in Talk about is_in tag)
Dave F.
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