[talk-au] When is a road, not a road?

[Sam Wilson]

I've found that there are quite a few MRWA road centre-lines that bear
no relation to where the actual road is. Usually because there are big
lumps of granite in the way, or quarries, or other physical reasons to
re-route the road. (I guess the road-builders don't tell MRWA that they
changed things?)

But yeah, I'm taking MRWA's geometries as a guide only, and certainly
not assuming their data is 100% complete. :-) So, I'd assume that any
non-track highway that is in OSM but not in MRWA is as-currently-mapped,
and leave it be.

Also, around towns there are often MRWA residential roads with names and
classifications etc. but which haven't actually (yet) been built. These
are sometimes currently firebreaks, but sometimes just scrub.

:-)

Of course, really what we should do it get out there for some
ground-truthing to solve these questions! :-)

—Sam

On Thu, 22 Dec 2016, at 01:11 PM, Andrew Davidson wrote:
> The metadata says that it includes roads maintained by Main Roads and 
> "all roads controlled by Local Government (Local Roads) that are 
> assigned road numbers", which is great. It also has "other centreline is 
> also included for paths and unknown roads" which is a bit vague as to 
> how complete the data set is. What do the missing roads look like on 
> aerial imagery?
> 
> On 22/12/16 16:06, Warin wrote:
> > On 22-Dec-16 03:59 PM, Warren wrote:
> >> I suspect the answer to this question  is simple.
> >>
> >> Following Sam Wilson's post about the data sources available for
> >> Western Australian Roads, and using Sam's approach I have begun adding
> >> and checking road names in WA.  In  the area that I am currently
> >> working there are a number of named "roads" on  OSM (usually Highway:
> >> unclassified), that do not appear on the Main roads data.
> >>
> >> If a road is not on the Main roads database does it automatically
> >> become a named track (Highway: Track)    ?
> >
> > I'd leave it alone... someone thinks otherwise ... contact them for
> > their view.
> >
> > The 'Main roads database' may not include roads maintained by local
> > councils ... that does not make them OSM 'highway=track'.
> >
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