Re: [talk-au] [Tagging] Tagging highway=cycleway without explicit knowledge of the law?

2009-12-15 Per discussione swanilli
Two points:

1. The terminology foot=designated and bicycle=designated is confusing,
since the opposite of designated is not no but undesignated or
non-designated. Just leave it as it is on thousands of ways as
bicycle=yes or no and foot=yes or no. There is no need for a change.

2. The idea that every way on which bicycles are permitted should be
designated cycleway implying it is primarily for bicycles, is, in my opinion
either hopeful, naïve or arrogant. If you read, for example, the extract
from the Australian Road Rules for Australian separated footpath it is
clear that the correct designation is footpath and not cycleway. Leave
well alone or you will bring the wrath of the gods down on OSM.


2009/12/14 Roy Wallace waldo000...@gmail.com

 On Sun, Dec 13, 2009 at 11:50 PM, Steve Bennett stevag...@gmail.com
 wrote:
  On Sun, Dec 13, 2009 at 9:37 AM, Roy Wallace waldo000...@gmail.com
 wrote:
  One question, though, for Australian shared path, shouldn't this be:
 
  highway=cycleway, bicycle=designated, foot=designated
 
  rather than
 
  highway=footway, foot=yes, bicycle=yes
 
  I've updated the wiki page to this.

 I've made further updates - please correct me if you disagree - here
 is a summary:

 Australian footpath:
 highway=footway

 Australian bicycle path (Bicycle Only sign):
 highway=cycleway; foot=no

 Australian shared path (Bicycle and Pedestrian sign)
 highway=cycleway, foot=designated

 Australian separated footpath (Bicycle and Pedestrian separated by a line)
 highway=cycleway, foot=designated; segregated=yes

 Australian bicycle lane (Bicycle Lane sign)
 highway=type of highway, cycleway=lane

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Re: [talk-au] How to tag a non-existent road

2009-10-25 Per discussione swanilli
I agree with Graeme Wilson.

OSM should not include non-existent roads. The only convincing argument I
have seen put so far by the minority who want to show them is that it will
save other mappers from wasted time. Given that mappers are the minority and
people like Graeme in the majority I think it is there needs that should be
given priority.

Further, there is still the unresolved problem of what to tag these roads.
Non-existent is unhelpful and ambiguous as many people have pointed out
here. As far as I am concerned non-existent roads are in the same category
as childrens' imaginary friends, important to the individual but not of
much interest to anyone else.

Let's face it. There is so much that really does exist left to be mapped we
hardly need to put effort, particularly given the problems, into what does
not.

2009/10/26 John Smith deltafoxtrot...@gmail.com

 2009/10/25 Alex (Maxious) Sadleir maxi...@gmail.com:
  It will of course be essential that these are not displayed in a
  misleading way (or not displayed at all) and are not suggested as
  possible routes. We do have a way of marking no through roads via the
  access=no tag so while whichever tag is chosen for nonexistent roads
  is being adopted worldwide, we can still ensure that there will not be
  any confusion. However, I'm not sure how that is displayed on the
  various outputs (such as the Garmin devices, the web page maps etc.).

 If they do appear we need to file bugs so that the parsing code is
 fixed up to not show them :)

 The problem here isn't collecting data, it's making sure it doesn't
 appear most of the time. Unlike raster images which display everything
 collected, vector information can be selectively shown etc.

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Re: [talk-au] How to tag a non-existent road

2009-10-25 Per discussione swanilli
2009/10/26 John Smith deltafoxtrot...@gmail.com

 So far you are the only one suggesting non-existent is unhelpful or
 ambiguous, please explain how it is either of these things.


A browse through the preceding 30 or so entries in this thread will show
that this is not the case.

However, in an attempt to move this towards resolution, I have opened
another to give people the opportunity to vote on the specifics.
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[talk-au] Vote on highway=nonexistent

2009-10-25 Per discussione swanilli
The current suggestion in
http://wiki.openstreetmap.org/wiki/Australian_Tagging_Guidelines is that
roads that do not yet exist be tagged highway=nonexistent.

There are two key questions to be answered:

1.  Should such roads be entered into OSM?

2.  If they are to be entered, should they be tagged highway=nonexistent?
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Re: [talk-au] How to tag a non-existent road

2009-10-22 Per discussione swanilli
If highway=gazetted is ambiguous and most people are going to be puzzled by
highway=non-existent, might I suggest

highway=planned or highway=proposed

(I occasionally find myself (walking) on highway=overgrown – but I am not
suggesting adding this.)


2009/10/22 Evan Sebire e...@sebire.org

 I like 'gazetted_road', but I think it should be 'non-existent'.

 Looking at dictionary.com(which isn't a great reference) nobody would
 understand gazetted road, then I tried the best German translator dict.cc
 and
 it failed.
 Googling Gazetted road comes back with variety of answers, none of the
 first
 10 results mean non-existent so Gazetted is probably ambiguous.
 looks like a clear winner with non-existent.

 Hope this helps


 On Wednesday 21 Oct 2009 16:36:29 John Smith wrote:
  2009/10/22 Evan Sebire e...@sebire.org:
   In Melbourne people sometimes use the term 'unmade' for non-sealed
 roads.
So perhaps something clearer like gazetted would suit Australia.
   Someone on another list mentioned 'non-existent' being better for
   non-native English speakers.  But I think this doesn't really matter as
   application interfaces can translate it anyway.
 
  It would be better if we could come up with something that works well
  for most people without expecting software to translate it.
 
  If unmade is already ambiguous it would seem like a bad idea to use it.
 

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Re: [talk-au] When does a road become a track?

2009-10-20 Per discussione swanilli
I have tired to find some official definitions to clarify this.

Here is the Australian Standard definition of a road from AS 1348—2002 Road
and traffic engineering—Glossary of terms:

road: Route trafficable by motor vehicles; in law, the public right-of-way
between boundaries of adjoining property

In other words, a road is pubic land between two properties, whatever it is
surfaced with so a fire trail completely within a State Forest would not not
be a road. Track is not defined in AS 1348. In fact, when track is
mentioned, it is in relation to railway tracks (the steel things) or the
track of a vehicle (width between the wheels).

Just to confuse matters, this is what the NSW Department of Environment,
Climate Change and Water says about tracks in National Parks:

So what's the difference between a *trail *and a *track*? Trails are
generally only one lane wide and aren't covered with gravel or any other
form of road surface. You can walk or cycle on them. If a trail is open to
vehicles, it will often be suitable for 4WDs only.

Walking *tracks *are for walkers only. Some are only wide enough for
single-file walking; others allow three people to walk comfortably
side-by-side. Higher-standard tracks, usually in areas visited by many
people, may be surfaced with gravel, tarmac or boardwalks.

Here is a pragmatic solution based on AS 1348 and OSM custom:

highway=road if it is open to the public and located between property
boundaries, regardless of surface.

If it is within a property (including National Parks and State Forests):

   - unsealed: highway=track
  - sealed: highway=service

Cheers.


2009/10/20 Liz ed...@billiau.net:
 On Tue, 20 Oct 2009, Mark Pulley wrote:
 This might sound like a silly question, but I was wondering if there
 is any guidance on when a road becomes a track. I've been driving on
 dirt roads since I first learnt to drive, so I might tag a way
 highway=unclassified surface=unsealed, where someone who has always
 lived in a capital city might see the same road and tag it
 highway=track tracktype=grade2. I'm particularly thinking of roads
 through forests (in particular of a road near Mt Canobolas, Orange
 NSW), some are in good enough condition to definitely call a proper
 road but others aren't as well maintained, narrower, more eroded. I
 haven't got any sample pictures (was busy driving!)
 a couple of weeks ago some rural mappers were in favour of your scheme.
 can i drive my car on it easily - road
 am i crawling along avoiding obstacles and wishing i had brought  my
mountain
 bike  - track

 i don't grade tracks
 (personal belief only, if someone else wishes to spend time doing grading
 that's fine, but the condition of the surface varies according to when the
 council last graded, rain etc)


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Re: [talk-au] When does a road become a track?

2009-10-20 Per discussione swanilli
True, but it is probably just a technicality, in that it is the same
property owner on both sides of the road, with a strip of public land (the
road) down the middle. You just can't tell because there are no fences.
(Actually, this is where Google maps can be useful in Australia because they
do show propperty boundaries, though not always reliably.)

On old maps this situation used to be marked by a sort of elongated S
crossing the road to signify that the property continued. The cattle grids
mark either the boundary of paddocks in the same property or the boundaries
between different properties.

The same thing applies to railway lines that go through people's properties.
The railways call them rail corridors and these days treat them very much
as private land.

2009/10/20 John Smith deltafoxtrot...@gmail.com

 2009/10/20 swanilli swani...@gmail.com:
  Here is a pragmatic solution based on AS 1348 and OSM custom:
 
  highway=road if it is open to the public and located between property
  boundaries, regardless of surface.

 Some roads go through private properties, but they aren't tracks, you
 usually cross cattle grids when entering/exiting the private property,
 even though the road is publicly accessible.

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Re: [talk-au] When does a road become a track?

2009-10-20 Per discussione swanilli
I am not sure how this clarifies or confuses the tagging of roads in OSM
compared with the Australian Standard definition. Both seem to be saying the
same thing in different words.

However, to move things along it would be worth looking into
http://www.ozroads.com.au, an unofficial website that summarises the
classification of roads in the states and territories (e.g.
http://www.ozroads.com.au/NSW/RTA/classifications.htm). It would be nice to
have the official classifications aligned to OSM classifications (e.g.
primary , secondary etc).



2009/10/21 John Henderson snow...@gmx.com
Some others in government seem to already have a mistaken idea about what
constitutes a road. Take the Australian Road Rules:

12 What is a road

(1) A road is an area that is open to or used by the public and is
developed for, or has as one of its main uses, the driving or
riding of motor vehicles.
Note Motor vehicle is defined in the dictionary.

(2) However, unless the contrary intention appears, a reference
in the Australian Road Rules (except in this Division) to a
road does not include a reference to:
(a) an area so far as the area is declared, under another law
of this jurisdiction, not to be a road for the Australian
Road Rules; or
(b) any shoulder of the road.
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Re: [talk-au] Mapping railway lines

2009-10-06 Per discussione swanilli
The problem is you will find not with the metal railway carriages but with
the coating on the windows. I find my GPS works well in almost all carriages
(I get accuracy typically of 6 m).

Occasionally though, I get no signal in carriages that have been fine in the
past, the only difference seems to be in the glass, some of which has a very
obvious metallic coating.

Maybe you could go to a station and try it out in a cariage that was waiting
to leave.

2009/10/7 John Henderson snow...@gmx.com

 Has anyone had success using a GPS unit inside a metal railway carriage
 to map a railway line?

 I notice that parts of the main line between Sydney and Melbourne are
 missing, eg:

 http://www.openstreetmap.org/?lat=-34.7446lon=147.886zoom=14layers=B000FTF

 I'd consider doing the trip on the XPT if someone has proven it's viable.

 And I've also had to move the railway line aside quite a distance when
 accurately adding roads in the Yass area.

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Re: [talk-au] Why not to change coastlines automatically to ABS data.

2009-10-06 Per discussione swanilli
I would be cautious about preferencing survey and satellite/aerial
photography data over ABS.

I have found errors in both of these. Survey data from GPS seems at times to
have been either traced pooly from gpx tracks or based on innacurate
position data, especially where there are tall objects like buildings and
hills nearby. Similarly, imagery can be misleading when there is vegetation,
like mangroves on the shore, not to mention to low resolution of the yahoo
imagery itself.


2009/10/5 Ross Scanlon i...@4x4falcon.com

 Just noticed this:


 http://www.openstreetmap.org/?lat=-20.34647lon=148.95263zoom=16layers=B000FTF

 If you then go to edit and zoom in you find:

 Two restaurants that are now in the ocean.
 The airport road now in the ocean, this is a surveyed road and runs along
 the foreshore.
 The dam next to the airport overlapping the ocean.
 The marina disappeared totally. It's the area with the three ferry tracks
 going into it.

 So PLEASE look at the sat photos and already entered data before you go
 removing the coastline and using the ABS data automatically as the
 coastline.

 --
 Cheers
 Ross

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[talk-au] Australian bushwalking tracks

2009-09-21 Per discussione swanilli
I posted the following to OSM-newbies a week back but have had no
feedback. Any thoughts here?


I would like some consensus on the tagging of Australian bushwalking
tracks. Specifically, I am interested in unformed ways that are
unsuitable for all but the most courageous/insane cyclists. They are
typically just a worn path through bush. In some places (e.g. Royal
National Park (RNP)) they are designated as cycling prohibited (see
http://www.environment.nsw.gov.au/NationalParks/parkCycling.aspx?id=N0030)
a way on which cycling is permitted is referred to as a trail and one
for walkers only, as a track. The RNP naming is inconsistent and these
designations do not match OSM nomenclature.

The OSM Australian Tagging Guidelines
(http://wiki.openstreetmap.org/wiki/Australian_Tagging_Guidelines)
deals with cycling comprehensively (indeed, it seems biased that way)
but is silent on this point except for suggesting that an Australian
footpath be tagged as highway=footway with bicycle=no if unsuitable
for bikes. While this might seem to address the issue, it is
inconsistent with the general OSM guidance
(http://wiki.openstreetmap.org/wiki/Map_Features#Highway) which
clearly illustrates an urban, paved footpath. This is consistent with
the Australian usage of the term footpath as the Macquarie dictionary
defines a foot path as a path for pedestrians only, especially one at
the side of a road or street.

Given this inconsistency, I have been tagging fire trails and the like
(I ask myself if they are suitable for 4WD) as highway=track and
bushwalking tracks as highway=path.

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Re: [talk-au] Australian bushwalking tracks

2009-09-21 Per discussione swanilli
I did see the Bush Walking Tracks section, which is more or less in line
with what I had in mind. My problem is the ambiguity created under
Footpaths and Cycleways which seems to me biases use by bicycles e.g.:

Australian shared path (Bicycle and Pedestrian sign)

   - highway=cycleway, foot=yes

I agree with Evan's view that We should emphasis tagging properties and not
uses. Some of my local streets have a painted cycleway sign but it makes
little sense to tag the street as highway=cycleway, rather than say,
highway=residential.

A further problem is that most of the bushwalking tracks I have checked on
OSM are tagged as highway=footway which makes for a lot of changes if
consistency and clarity is the object.

However, since my objective is to clarify bushwalking and bush cycling
tagging, here are some principles that have emerged so far:

   1. Tag on properties and not uses. e.g.
   1. A fire trail suitable for a 4WD fire truck tagged as highway=track.
  2. Narrow, primarily walking, tracks as highway=path.
   2. Preferably add to ways tagged highway=path trail_visibility=* (
   http://wiki.openstreetmap.org/wiki/Key:trail_visibility). (This seems to
   me to be more usable in Australia than sac_scale=* (
   http://wiki.openstreetmap.org/wiki/Key:sac_scale) which is oriented to
   alpine climbing. sac_scale=hiking is probably the only valid one for the
   vast majority of Australia.)
   3. Use bicycle=no and foot=no only where bicycles and foot traffic are
   legally prohibited or to clarify areas where there are both permitted and
   prohibited uses. This should be on the basis of evidence in the form of
   signage or some officially published policy like
   http://www.environment.nsw.gov.au/NationalParks/parkCycling.aspx?id=N0030
   ).
   4. Allow potential users to determine the suitability for foot or bicycle
   use on the basis of the properties tagged.

Any more thoughts?


2009/9/22 Roy Wallace waldo000...@gmail.com:
 On Mon, Sep 21, 2009 at 6:30 PM, swanilli swani...@gmail.com wrote:

 Given this inconsistency, I have been tagging fire trails and the like
 (I ask myself if they are suitable for 4WD) as highway=track and
 bushwalking tracks as highway=path.

 Did you see the Bush Walking Tracks section of the Australian
 Tagging Guidelines page?

 highway=path works for me. Add as many other details as you feel like,
 e.g. those suggested by Evan. Verifiability is difficult in this case,
 but still an important goal.

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