On 25/07/19 23:06, Sebastian S. wrote:
Hi Aleksandar,
Just in case you have not reviewed it, there Is a wiki page Australian
tagging guideline
https://wiki.openstreetmap.org/wiki/Australian_Tagging_Guidelines
However Regarding your question 1 mayor road classification has always
been a no-go for me.
E.g. A8 Pittwater Road, North of Sydney, NSW.
It is an 'A' road according to Wikipedia these As are "primary
highways, including urban arterials and interstate or interregional
single carriageways."
Now for the most part the A8 has two or more lanes that are separated,
however the road is also lined with intersections with red lights,
driveways and houses. It is an important and high capacity road.
While the first points to me indicate it should be highway=trunk the
last points make me think it should be highway=primary.
As I often find myself in similar dilemmas I tend to not change the
classification.
For some guidance in NSW the LPI Base Map can be of help.
As an example I use it for tertiary versus unclassified as these tend
not to have physical differences but the importance to the local
community is the thing that changes them.
Aside from providing some examples of your cases I ask you what is
your driver to look at the road classification and see the need to
revise it?
What are the benefits of a road changing between trunk and primary?
What does it do for map users and data consumers?
I would think that routers will pay some attention to the road
classification, assuming the higher one would be preferred for a faster
trip (less side entrances, stop etc).
The way I understand your email you refer to major review of the
classification and not a fix if a single local point.
Or do you consider the classification of (some) roads that wrong that
you can't live with it?
Curious, Sebastian
--
Sent from my Android device with K-9 Mail. Please excuse my brevity.
On 23 July 2019 12:50:19 am AEST, "Aleksandar Matejevic (E-Search) via
Talk-au" <[email protected]> wrote:
Hi all,
My name is Aleksandar Matejevic, I work for Microsoft OSM
Editorial team. In order to make the best decision in classifying
roads across Australia, I need some help.
In government data and on signposts you can find on mapillary
and/or open street cam, you can track route numbers. I found out
that routes mostly consist of:
M route – motorways
A route – trunks
B route – primary roads
C route - secondary roads
As long you map in non-urban area this is 99.99% true, but when
you map into city area it starts to get confusing.
On this wiki page
_https://en.wikipedia.org/wiki/Highways_in_Australia_ there is no
real explanation how to classify AUS roads in OSM
If you strictly follow this page:
_https://wiki.openstreetmap.org/wiki/Key:highway_ than you should
change road classification several times on the same route way.
Therefore I have a couple of questions:
1. Do you change the classification of highway on the motorway
route into trunk through the city because it does not have a
physical barrier in between (not restricted access) or do you keep
it as motorway because of consistency?
2. If we were to change the road classification several times
during one route way, should we ignore segments that are less than
3km (for example motorway going through minor city in which it has
a quality of trunk)?
3. Can motorway have some traffic signals when passing through city?
4. How to classify State routes (for example in Melbourne)?
Best regards,
Aleksandar
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